20560134764 has 48 divisors (see below), whose sum is σ = 43186600800. Its totient is φ = 8461034496.

The previous prime is 20560134757. The next prime is 20560134779. The reversal of 20560134764 is 46743106502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595259 + ... + 628850.

It is an arithmetic number, because the mean of its divisors is an integer number (899720850).

Almost surely, 2^20560134764 is an apocalyptic number.

It is an amenable number.

20560134764 is an abundant number, since it is smaller than the sum of its proper divisors (22626466036).

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

20560134764 is a wasteful number, since it uses less digits than its factorization.

20560134764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224162 (or 1224160 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20560134764 in words is "twenty billion, five hundred sixty million, one hundred thirty-four thousand, seven hundred sixty-four".