11397562057 has 4 divisors (see below), whose sum is σ = 13025785216. Its totient is φ = 9769338900.

The previous prime is 11397562031. The next prime is 11397562067. The reversal of 11397562057 is 75026579311.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75026579311 = 195737 ⋅383303.

It is a cyclic number.

It is not a de Polignac number, because 11397562057 - 2¹⁵ = 11397529289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11397561998 and 11397562016.

It is not an unprimeable number, because it can be changed into a prime (11397562027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814111569 + ... + 814111582.

It is an arithmetic number, because the mean of its divisors is an integer number (3256446304).

Almost surely, 2^11397562057 is an apocalyptic number.

It is an amenable number.

11397562057 is a deficient number, since it is larger than the sum of its proper divisors (1628223159).

11397562057 is an equidigital number, since it uses as much as digits as its factorization.

11397562057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628223158.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 11397562057 in words is "eleven billion, three hundred ninety-seven million, five hundred sixty-two thousand, fifty-seven".