1156164885423 has 12 divisors (see below), whose sum is σ = 1670025923488. Its totient is φ = 770771985120.

The previous prime is 1156164885419. The next prime is 1156164885433. The reversal of 1156164885423 is 3245884616511.

1156164885423 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 16 + 4 + 88 + 542 + 3 = 666.

It is not a de Polignac number, because 1156164885423 - 2² = 1156164885419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156164885423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156164885433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1959003 + ... + 2479923.

Almost surely, 2^{1156164885423} is an apocalyptic number.

1156164885423 is a deficient number, since it is larger than the sum of its proper divisors (513861038065).

1156164885423 is a wasteful number, since it uses less digits than its factorization.

1156164885423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767534 (or 767531 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 1156164885423 in words is "one trillion, one hundred fifty-six billion, one hundred sixty-four million, eight hundred eighty-five thousand, four hundred twenty-three".