312644465651 has 24 divisors (see below), whose sum is σ = 389757837600. Its totient is φ = 249401763072.

The previous prime is 312644465641. The next prime is 312644465711. The reversal of 312644465651 is 156564446213.

It is not a de Polignac number, because 312644465651 - 2¹⁴ = 312644449267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312644465596 and 312644465605.

It is not an unprimeable number, because it can be changed into a prime (312644465641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3707126 + ... + 3790523.

It is an arithmetic number, because the mean of its divisors is an integer number (16239909900).

Almost surely, 2^312644465651 is an apocalyptic number.

312644465651 is a deficient number, since it is larger than the sum of its proper divisors (77113371949).

312644465651 is a wasteful number, since it uses less digits than its factorization.

312644465651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7497723 (or 7497716 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 47.

The spelling of 312644465651 in words is "three hundred twelve billion, six hundred forty-four million, four hundred sixty-five thousand, six hundred fifty-one".