12638763210 has 32 divisors (see below), whose sum is σ = 30430588032. Its totient is φ = 3359497280.

The previous prime is 12638763199. The next prime is 12638763229. The reversal of 12638763210 is 1236783621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667989 + ... + 686648.

It is an arithmetic number, because the mean of its divisors is an integer number (950955876).

Almost surely, 2^12638763210 is an apocalyptic number.

12638763210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638763210 is an abundant number, since it is smaller than the sum of its proper divisors (17791824822).

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

12638763210 is a wasteful number, since it uses less digits than its factorization.

12638763210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354958.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 12638763210 in words is "twelve billion, six hundred thirty-eight million, seven hundred sixty-three thousand, two hundred ten".