11162971057 has 4 divisors (see below), whose sum is σ = 12757681216. Its totient is φ = 9568260900.

The previous prime is 11162971031. The next prime is 11162971063. The reversal of 11162971057 is 75017926111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11162971057 - 2¹⁹ = 11162446769 is a prime.

It is a super-2 number, since 2×11162971057² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11162971007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797355069 + ... + 797355082.

It is an arithmetic number, because the mean of its divisors is an integer number (3189420304).

Almost surely, 2^11162971057 is an apocalyptic number.

It is an amenable number.

11162971057 is a deficient number, since it is larger than the sum of its proper divisors (1594710159).

11162971057 is an equidigital number, since it uses as much as digits as its factorization.

11162971057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594710158.

The product of its (nonzero) digits is 26460, while the sum is 40.

The spelling of 11162971057 in words is "eleven billion, one hundred sixty-two million, nine hundred seventy-one thousand, fifty-seven".