11612233657 has 2 divisors, whose sum is σ = 11612233658. Its totient is φ = 11612233656.

The previous prime is 11612233643. The next prime is 11612233691. The reversal of 11612233657 is 75633221611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8764517161 + 2847716496 = 93619^2 + 53364^2 .

It is an emirp because it is prime and its reverse (75633221611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11612233657 - 2²³ = 11603845049 is a prime.

It is not a weakly prime, because it can be changed into another prime (11612233627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5806116828 + 5806116829.

It is an arithmetic number, because the mean of its divisors is an integer number (5806116829).

Almost surely, 2^11612233657 is an apocalyptic number.

It is an amenable number.

11612233657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11612233657 is an equidigital number, since it uses as much as digits as its factorization.

11612233657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The spelling of 11612233657 in words is "eleven billion, six hundred twelve million, two hundred thirty-three thousand, six hundred fifty-seven".