20357931216 has 120 divisors (see below), whose sum is σ = 64397678880. Its totient is φ = 5510405376.

The previous prime is 20357931127. The next prime is 20357931233. The reversal of 20357931216 is 61213975302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183091 + ... + 272466.

It is an arithmetic number, because the mean of its divisors is an integer number (536647324).

Almost surely, 2^20357931216 is an apocalyptic number.

It is an amenable number.

20357931216 is an abundant number, since it is smaller than the sum of its proper divisors (44039747664).

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

20357931216 is a wasteful number, since it uses less digits than its factorization.

20357931216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455601 (or 455588 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 20357931216 in words is "twenty billion, three hundred fifty-seven million, nine hundred thirty-one thousand, two hundred sixteen".