20311162704 has 120 divisors (see below), whose sum is σ = 65003964480. Its totient is φ = 5799573504.

The previous prime is 20311162699. The next prime is 20311162727. The reversal of 20311162704 is 40726111302.

20311162704 is a `hidden beast` number, since 2 + 0 + 31 + 1 + 1 + 627 + 0 + 4 = 666.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1898779 + ... + 1909445.

It is an arithmetic number, because the mean of its divisors is an integer number (541699704).

Almost surely, 2^20311162704 is an apocalyptic number.

20311162704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20311162704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32501982240).

20311162704 is an abundant number, since it is smaller than the sum of its proper divisors (44692801776).

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

20311162704 is a wasteful number, since it uses less digits than its factorization.

20311162704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577 (or 12568 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 20311162704 in words is "twenty billion, three hundred eleven million, one hundred sixty-two thousand, seven hundred four".