1312516028761 has 4 divisors (see below), whose sum is σ = 1500018318592. Its totient is φ = 1125013738932.

The previous prime is 1312516028737. The next prime is 1312516028773. The reversal of 1312516028761 is 1678206152131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312516028761 - 2⁵ = 1312516028729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312516028711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93751144905 + ... + 93751144918.

It is an arithmetic number, because the mean of its divisors is an integer number (375004579648).

Almost surely, 2^{1312516028761} is an apocalyptic number.

It is an amenable number.

1312516028761 is a deficient number, since it is larger than the sum of its proper divisors (187502289831).

1312516028761 is an equidigital number, since it uses as much as digits as its factorization.

1312516028761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187502289830.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 1312516028761 in words is "one trillion, three hundred twelve billion, five hundred sixteen million, twenty-eight thousand, seven hundred sixty-one".