38199912912 has 60 divisors (see below), whose sum is σ = 122179089760. Its totient is φ = 10914260544.

The previous prime is 38199912911. The next prime is 38199912937. The reversal of 38199912912 is 21921999183.

38199912912 is a `hidden beast` number, since 381 + 99 + 91 + 2 + 91 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38199912911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18947362 + ... + 18949377.

Almost surely, 2^38199912912 is an apocalyptic number.

It is an amenable number.

38199912912 is an abundant number, since it is smaller than the sum of its proper divisors (83979176848).

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

38199912912 is a wasteful number, since it uses less digits than its factorization.

38199912912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37896760 (or 37896751 counting only the distinct ones).

The product of its digits is 629856, while the sum is 54.

The spelling of 38199912912 in words is "thirty-eight billion, one hundred ninety-nine million, nine hundred twelve thousand, nine hundred twelve".