11657212577331 has 4 divisors (see below), whose sum is σ = 15542950103112. Its totient is φ = 7771475051552.

The previous prime is 11657212577267. The next prime is 11657212577333. The reversal of 11657212577331 is 13377521275611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11657212577331 - 2⁶ = 11657212577267 is a prime.

It is a super-2 number, since 2×11657212577331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11657212577333) 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, 1942868762886 + ... + 1942868762891.

It is an arithmetic number, because the mean of its divisors is an integer number (3885737525778).

Almost surely, 2^{11657212577331} is an apocalyptic number.

11657212577331 is a deficient number, since it is larger than the sum of its proper divisors (3885737525781).

11657212577331 is an equidigital number, since it uses as much as digits as its factorization.

11657212577331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885737525780.

The product of its digits is 1852200, while the sum is 51.

The spelling of 11657212577331 in words is "eleven trillion, six hundred fifty-seven billion, two hundred twelve million, five hundred seventy-seven thousand, three hundred thirty-one".