12642092520 has 128 divisors (see below), whose sum is σ = 38907872640. Its totient is φ = 3284213760.

The previous prime is 12642092417. The next prime is 12642092521. The reversal of 12642092520 is 2529024621.

It is not an unprimeable number, because it can be changed into a prime (12642092521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4461024 + ... + 4463856.

It is an arithmetic number, because the mean of its divisors is an integer number (303967755).

Almost surely, 2^12642092520 is an apocalyptic number.

12642092520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12642092520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19453936320).

12642092520 is an abundant number, since it is smaller than the sum of its proper divisors (26265780120).

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

12642092520 is a wasteful number, since it uses less digits than its factorization.

12642092520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795 (or 3791 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 12642092520 in words is "twelve billion, six hundred forty-two million, ninety-two thousand, five hundred twenty".