12638875000 has 56 divisors (see below), whose sum is σ = 29622277080. Its totient is φ = 5055500000.

The previous prime is 12638874977. The next prime is 12638875003. The reversal of 12638875000 is 57883621.

It is a super-2 number, since 2×12638875000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638875003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 74445 + ... + 175555.

Almost surely, 2^12638875000 is an apocalyptic number.

12638875000 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 12638875000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14811138540).

12638875000 is an abundant number, since it is smaller than the sum of its proper divisors (16983402080).

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

12638875000 is an frugal number, since it uses more digits than its factorization.

12638875000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101147 (or 101118 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 12638875000 in words is "twelve billion, six hundred thirty-eight million, eight hundred seventy-five thousand".