20577526872 has 96 divisors (see below), whose sum is σ = 60972102000. Its totient is φ = 5768345856.

The previous prime is 20577526867. The next prime is 20577526877. The reversal of 20577526872 is 27862577502.

It is an interprime number because it is at equal distance from previous prime (20577526867) and next prime (20577526877).

It is a super-2 number, since 2×20577526872² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20577526877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102747 + ... + 227402.

Almost surely, 2^20577526872 is an apocalyptic number.

It is an amenable number.

20577526872 is an abundant number, since it is smaller than the sum of its proper divisors (40394575128).

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

20577526872 is a wasteful number, since it uses less digits than its factorization.

20577526872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330225 (or 330214 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 51.

The spelling of 20577526872 in words is "twenty billion, five hundred seventy-seven million, five hundred twenty-six thousand, eight hundred seventy-two".