1312901912779 has 16 divisors (see below), whose sum is σ = 1378630098720. Its totient is φ = 1248542507520.

The previous prime is 1312901912767. The next prime is 1312901912813. The reversal of 1312901912779 is 9772191092131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1312901912779 - 2⁵ = 1312901912747 is a prime.

It is a super-2 number, since 2×1312901912779² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312901912719) 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, 15932307 + ... + 16014499.

It is an arithmetic number, because the mean of its divisors is an integer number (86164381170).

Almost surely, 2^{1312901912779} is an apocalyptic number.

1312901912779 is a deficient number, since it is larger than the sum of its proper divisors (65728185941).

1312901912779 is an equidigital number, since it uses as much as digits as its factorization.

1312901912779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90510.

The product of its (nonzero) digits is 428652, while the sum is 52.

The spelling of 1312901912779 in words is "one trillion, three hundred twelve billion, nine hundred one million, nine hundred twelve thousand, seven hundred seventy-nine".