1311056565115 has 16 divisors (see below), whose sum is σ = 1721810877696. Its totient is φ = 950429768800.

The previous prime is 1311056565101. The next prime is 1311056565151. The reversal of 1311056565115 is 5115656501131.

It is not a de Polignac number, because 1311056565115 - 2⁵ = 1311056565083 is a prime.

It is a super-2 number, since 2×1311056565115² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38306677 + ... + 38340886.

It is an arithmetic number, because the mean of its divisors is an integer number (107613179856).

Almost surely, 2^{1311056565115} is an apocalyptic number.

1311056565115 is a deficient number, since it is larger than the sum of its proper divisors (410754312581).

1311056565115 is a wasteful number, since it uses less digits than its factorization.

1311056565115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76647890.

The product of its (nonzero) digits is 67500, while the sum is 40.

The spelling of 1311056565115 in words is "one trillion, three hundred eleven billion, fifty-six million, five hundred sixty-five thousand, one hundred fifteen".