1156216513311 has 24 divisors (see below), whose sum is σ = 1727704218240. Its totient is φ = 744327950400.

The previous prime is 1156216513307. The next prime is 1156216513337. The reversal of 1156216513311 is 1133156126511.

1156216513311 is a `hidden beast` number, since 1 + 1 + 5 + 621 + 6 + 5 + 13 + 3 + 11 = 666.

It is not a de Polignac number, because 1156216513311 - 2² = 1156216513307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156216513381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4366116 + ... + 4623353.

It is an arithmetic number, because the mean of its divisors is an integer number (71987675760).

Almost surely, 2^{1156216513311} is an apocalyptic number.

1156216513311 is a deficient number, since it is larger than the sum of its proper divisors (571487704929).

1156216513311 is a wasteful number, since it uses less digits than its factorization.

1156216513311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989967 (or 8989964 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The spelling of 1156216513311 in words is "one trillion, one hundred fifty-six billion, two hundred sixteen million, five hundred thirteen thousand, three hundred eleven".