1156666311601 has 16 divisors (see below), whose sum is σ = 1168949193984. Its totient is φ = 1144452945024.

The previous prime is 1156666311587. The next prime is 1156666311659. The reversal of 1156666311601 is 1061136666511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1156666311601 - 2³¹ = 1154518827953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156666311001) 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, 92180410 + ... + 92192956.

It is an arithmetic number, because the mean of its divisors is an integer number (73059324624).

Almost surely, 2^{1156666311601} is an apocalyptic number.

It is an amenable number.

1156666311601 is a deficient number, since it is larger than the sum of its proper divisors (12282882383).

1156666311601 is a wasteful number, since it uses less digits than its factorization.

1156666311601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 1156666311601 in words is "one trillion, one hundred fifty-six billion, six hundred sixty-six million, three hundred eleven thousand, six hundred one".