12637501379 has 4 divisors (see below), whose sum is σ = 12639921576. Its totient is φ = 12635081184.

The previous prime is 12637501337. The next prime is 12637501391. The reversal of 12637501379 is 97310573621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12637501379 is a prime.

It is a super-2 number, since 2×12637501379² (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 (12637501579) 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, 1202249 + ... + 1212714.

It is an arithmetic number, because the mean of its divisors is an integer number (3159980394).

Almost surely, 2^12637501379 is an apocalyptic number.

12637501379 is a deficient number, since it is larger than the sum of its proper divisors (2420197).

12637501379 is an equidigital number, since it uses as much as digits as its factorization.

12637501379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420196.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 12637501379 in words is "twelve billion, six hundred thirty-seven million, five hundred one thousand, three hundred seventy-nine".