20856327332 has 12 divisors (see below), whose sum is σ = 36499679580. Its totient is φ = 10427847456.

The previous prime is 20856327313. The next prime is 20856327347. The reversal of 20856327332 is 23372365802.

It can be written as a sum of positive squares in 2 ways, for example, as 4723263076 + 16133064256 = 68726^2 + 127016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20856327332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131894 + ... + 243122.

It is an arithmetic number, because the mean of its divisors is an integer number (3041639965).

Almost surely, 2^20856327332 is an apocalyptic number.

It is an amenable number.

20856327332 is a deficient number, since it is larger than the sum of its proper divisors (15643352248).

20856327332 is a wasteful number, since it uses less digits than its factorization.

20856327332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158110 (or 158108 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 20856327332 in words is "twenty billion, eight hundred fifty-six million, three hundred twenty-seven thousand, three hundred thirty-two".