20514223146160 has 80 divisors (see below), whose sum is σ = 49350882636000. Its totient is φ = 7921026111488.

The previous prime is 20514223146107. The next prime is 20514223146163. The reversal of 20514223146160 is 6164132241502.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (20514223146163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9834687 + ... + 11736673.

It is an arithmetic number, because the mean of its divisors is an integer number (616886032950).

Almost surely, 2^{20514223146160} is an apocalyptic number.

20514223146160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20514223146160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24675441318000).

20514223146160 is an abundant number, since it is smaller than the sum of its proper divisors (28836659489840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20514223146160 is a wasteful number, since it uses less digits than its factorization.

20514223146160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906678 (or 1906672 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 20514223146160 its reverse (6164132241502), we get a palindrome (26678355387662).

The spelling of 20514223146160 in words is "twenty trillion, five hundred fourteen billion, two hundred twenty-three million, one hundred forty-six thousand, one hundred sixty".