1312307549568 has 48 divisors (see below), whose sum is σ = 3776301675900. Its totient is φ = 437435849472.

The previous prime is 1312307549557. The next prime is 1312307549599. The reversal of 1312307549568 is 8659457032131.

It is a happy number.

1312307549568 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 3 + 0 + 75 + 4 + 9 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1312307549568² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569576778 + ... + 569579081.

It is a 1-persistent number, because it is pandigital, but 2⋅1312307549568 = 2624615099136 is not.

Almost surely, 2^{1312307549568} is an apocalyptic number.

1312307549568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1312307549568 is an abundant number, since it is smaller than the sum of its proper divisors (2463994126332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312307549568 is a wasteful number, since it uses less digits than its factorization.

1312307549568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139155879 (or 1139155864 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 1312307549568 in words is "one trillion, three hundred twelve billion, three hundred seven million, five hundred forty-nine thousand, five hundred sixty-eight".