20412799715 has 32 divisors (see below), whose sum is σ = 30548689920. Its totient is φ = 12721104000.

The previous prime is 20412799711. The next prime is 20412799733. The reversal of 20412799715 is 51799721402.

It is not a de Polignac number, because 20412799715 - 2² = 20412799711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20412799715.

It is not an unprimeable number, because it can be changed into a prime (20412799711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1900781 + ... + 1911489.

It is an arithmetic number, because the mean of its divisors is an integer number (954646560).

Almost surely, 2^20412799715 is an apocalyptic number.

20412799715 is a deficient number, since it is larger than the sum of its proper divisors (10135890205).

20412799715 is a wasteful number, since it uses less digits than its factorization.

20412799715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683.

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 20412799715 in words is "twenty billion, four hundred twelve million, seven hundred ninety-nine thousand, seven hundred fifteen".