12666590526 has 8 divisors (see below), whose sum is σ = 25333181064. Its totient is φ = 4222196840.

The previous prime is 12666590441. The next prime is 12666590527. The reversal of 12666590526 is 62509566621.

It is a sphenic number, since it is the product of 3 distinct primes.

12666590526 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666590527) 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, 1055549205 + ... + 1055549216.

It is an arithmetic number, because the mean of its divisors is an integer number (3166647633).

Almost surely, 2^12666590526 is an apocalyptic number.

12666590526 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12666590526 is a wasteful number, since it uses less digits than its factorization.

12666590526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111098426.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 12666590526 in words is "twelve billion, six hundred sixty-six million, five hundred ninety thousand, five hundred twenty-six".