11631077657 has 4 divisors (see below), whose sum is σ = 11634360336. Its totient is φ = 11627794980.

The previous prime is 11631077641. The next prime is 11631077671. The reversal of 11631077657 is 75677013611.

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: 75677013611 = 23599 ⋅3206789.

It is a cyclic number.

It is not a de Polignac number, because 11631077657 - 2⁴ = 11631077641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11631077617) 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, 1636019 + ... + 1643112.

It is an arithmetic number, because the mean of its divisors is an integer number (2908590084).

Almost surely, 2^11631077657 is an apocalyptic number.

It is an amenable number.

11631077657 is a deficient number, since it is larger than the sum of its proper divisors (3282679).

11631077657 is an equidigital number, since it uses as much as digits as its factorization.

11631077657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282678.

The product of its (nonzero) digits is 185220, while the sum is 44.

The spelling of 11631077657 in words is "eleven billion, six hundred thirty-one million, seventy-seven thousand, six hundred fifty-seven".