11801682257 has 4 divisors (see below), whose sum is σ = 11951070720. Its totient is φ = 11652293796.

The previous prime is 11801682223. The next prime is 11801682259. The reversal of 11801682257 is 75228610811.

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 11801682257 - 2¹⁰ = 11801681233 is a prime.

It is a super-2 number, since 2×11801682257² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11801682259) 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, 74694113 + ... + 74694270.

It is an arithmetic number, because the mean of its divisors is an integer number (2987767680).

Almost surely, 2^11801682257 is an apocalyptic number.

It is an amenable number.

11801682257 is a deficient number, since it is larger than the sum of its proper divisors (149388463).

11801682257 is an equidigital number, since it uses as much as digits as its factorization.

11801682257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149388462.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 11801682257 in words is "eleven billion, eight hundred one million, six hundred eighty-two thousand, two hundred fifty-seven".