20514222254456 has 32 divisors (see below), whose sum is σ = 43961646084480. Its totient is φ = 8791289858400.

The previous prime is 20514222254453. The next prime is 20514222254609. The reversal of 20514222254456 is 65445222241502.

It is a super-2 number, since 2×20514222254456² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514222254453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9870050 + ... + 11766321.

It is an arithmetic number, because the mean of its divisors is an integer number (1373801440140).

Almost surely, 2^{20514222254456} is an apocalyptic number.

It is an amenable number.

20514222254456 is an abundant number, since it is smaller than the sum of its proper divisors (23447423830024).

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

20514222254456 is a wasteful number, since it uses less digits than its factorization.

20514222254456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21653315 (or 21653311 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 44.

Adding to 20514222254456 its reverse (65445222241502), we get a palindrome (85959444495958).

The spelling of 20514222254456 in words is "twenty trillion, five hundred fourteen billion, two hundred twenty-two million, two hundred fifty-four thousand, four hundred fifty-six".