1312516350664 has 64 divisors (see below), whose sum is σ = 2533222823040. Its totient is φ = 637315230720.

The previous prime is 1312516350661. The next prime is 1312516350667. The reversal of 1312516350664 is 4660536152131.

It is an interprime number because it is at equal distance from previous prime (1312516350661) and next prime (1312516350667).

It is a self number, because there is not a number n which added to its sum of digits gives 1312516350664.

It is not an unprimeable number, because it can be changed into a prime (1312516350661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15846222 + ... + 15928834.

It is an arithmetic number, because the mean of its divisors is an integer number (39581606610).

Almost surely, 2^{1312516350664} is an apocalyptic number.

It is an amenable number.

1312516350664 is a deficient number, since it is larger than the sum of its proper divisors (1220706472376).

1312516350664 is a wasteful number, since it uses less digits than its factorization.

1312516350664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83110 (or 83106 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 1312516350664 in words is "one trillion, three hundred twelve billion, five hundred sixteen million, three hundred fifty thousand, six hundred sixty-four".