20868215324 has 24 divisors (see below), whose sum is σ = 40045757808. Its totient is φ = 9436400640.

The previous prime is 20868215321. The next prime is 20868215363. The reversal of 20868215324 is 42351286802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20868215321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220207 + ... + 1237190.

It is an arithmetic number, because the mean of its divisors is an integer number (1668573242).

Almost surely, 2^20868215324 is an apocalyptic number.

It is an amenable number.

20868215324 is a deficient number, since it is larger than the sum of its proper divisors (19177542484).

20868215324 is a wasteful number, since it uses less digits than its factorization.

20868215324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457605 (or 2457603 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 20868215324 in words is "twenty billion, eight hundred sixty-eight million, two hundred fifteen thousand, three hundred twenty-four".