12638832610 has 16 divisors (see below), whose sum is σ = 23304775032. Its totient is φ = 4932227200.

The previous prime is 12638832593. The next prime is 12638832611. The reversal of 12638832610 is 1623883621.

It can be written as a sum of positive squares in 4 ways, for example, as 2369645041 + 10269187569 = 48679^2 + 101337^2 .

It is not an unprimeable number, because it can be changed into a prime (12638832611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15412801 + ... + 15413620.

Almost surely, 2^12638832610 is an apocalyptic number.

12638832610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638832610 is a deficient number, since it is larger than the sum of its proper divisors (10665942422).

12638832610 is a wasteful number, since it uses less digits than its factorization.

12638832610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30826469.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 12638832610 in words is "twelve billion, six hundred thirty-eight million, eight hundred thirty-two thousand, six hundred ten".