20570252736 has 56 divisors (see below), whose sum is σ = 59373235584. Its totient is φ = 6233409280.

The previous prime is 20570252719. The next prime is 20570252737. The reversal of 20570252736 is 63725207502.

It is a junction number, because it is equal to n+sod(n) for n = 20570252694 and 20570252703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20570252737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4867740 + ... + 4871963.

Almost surely, 2^20570252736 is an apocalyptic number.

It is an amenable number.

20570252736 is an abundant number, since it is smaller than the sum of its proper divisors (38802982848).

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

20570252736 is a wasteful number, since it uses less digits than its factorization.

20570252736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9739729 (or 9739719 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 20570252736 in words is "twenty billion, five hundred seventy million, two hundred fifty-two thousand, seven hundred thirty-six".