20677929597 has 72 divisors (see below), whose sum is σ = 33956133120. Its totient is φ = 12104052480.

The previous prime is 20677929563. The next prime is 20677929661. The reversal of 20677929597 is 79592977602.

It is not a de Polignac number, because 20677929597 - 2⁸ = 20677929341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20677929527) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2778193 + ... + 2785625.

It is an arithmetic number, because the mean of its divisors is an integer number (471612960).

Almost surely, 2^20677929597 is an apocalyptic number.

It is an amenable number.

20677929597 is a deficient number, since it is larger than the sum of its proper divisors (13278203523).

20677929597 is a wasteful number, since it uses less digits than its factorization.

20677929597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555 (or 7539 counting only the distinct ones).

The product of its (nonzero) digits is 30005640, while the sum is 63.

The spelling of 20677929597 in words is "twenty billion, six hundred seventy-seven million, nine hundred twenty-nine thousand, five hundred ninety-seven".