7638789912 has 32 divisors (see below), whose sum is σ = 20565973680. Its totient is φ = 2350396800.

The previous prime is 7638789901. The next prime is 7638789929. The reversal of 7638789912 is 2199878367.

It is a super-2 number, since 2×7638789912² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12241339 + ... + 12241962.

Almost surely, 2^7638789912 is an apocalyptic number.

It is an amenable number.

7638789912 is an abundant number, since it is smaller than the sum of its proper divisors (12927183768).

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

7638789912 is a wasteful number, since it uses less digits than its factorization.

7638789912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24483323 (or 24483319 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The square root of 7638789912 is about 87400.1711211139. The cubic root of 7638789912 is about 1969.4344114018.

The spelling of 7638789912 in words is "seven billion, six hundred thirty-eight million, seven hundred eighty-nine thousand, nine hundred twelve".