20877687324 has 72 divisors (see below), whose sum is σ = 56876619072. Its totient is φ = 6419053440.

The previous prime is 20877687323. The next prime is 20877687349. The reversal of 20877687324 is 42378677802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20877687323) 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, 630157 + ... + 662459.

Almost surely, 2^20877687324 is an apocalyptic number.

It is an amenable number.

20877687324 is an abundant number, since it is smaller than the sum of its proper divisors (35998931748).

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

20877687324 is a wasteful number, since it uses less digits than its factorization.

20877687324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33707 (or 33702 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 54.

The spelling of 20877687324 in words is "twenty billion, eight hundred seventy-seven million, six hundred eighty-seven thousand, three hundred twenty-four".