312766661091 has 32 divisors (see below), whose sum is σ = 438977088000. Its totient is φ = 197790259968.

The previous prime is 312766661087. The next prime is 312766661099. The reversal of 312766661091 is 190166667213.

It is not a de Polignac number, because 312766661091 - 2² = 312766661087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312766661091.

It is not an unprimeable number, because it can be changed into a prime (312766661099) 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, 8980770 + ... + 9015528.

It is an arithmetic number, because the mean of its divisors is an integer number (13718034000).

Almost surely, 2^312766661091 is an apocalyptic number.

312766661091 is a deficient number, since it is larger than the sum of its proper divisors (126210426909).

312766661091 is a wasteful number, since it uses less digits than its factorization.

312766661091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36603.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 312766661091 in words is "three hundred twelve billion, seven hundred sixty-six million, six hundred sixty-one thousand, ninety-one".