20565195924 has 72 divisors (see below), whose sum is σ = 60113671968. Its totient is φ = 5423785920.

The previous prime is 20565195881. The next prime is 20565195929. The reversal of 20565195924 is 42959156502.

It is a super-3 number, since 3×20565195924³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20565195929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1337542 + ... + 1352829.

Almost surely, 2^20565195924 is an apocalyptic number.

It is an amenable number.

20565195924 is an abundant number, since it is smaller than the sum of its proper divisors (39548476044).

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

20565195924 is a wasteful number, since it uses less digits than its factorization.

20565195924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690405 (or 2690396 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 20565195924 in words is "twenty billion, five hundred sixty-five million, one hundred ninety-five thousand, nine hundred twenty-four".