38243776688 has 80 divisors (see below), whose sum is σ = 84162113280. Its totient is φ = 16689100032.

The previous prime is 38243776667. The next prime is 38243776693. The reversal of 38243776688 is 88667734283.

It is a super-2 number, since 2×38243776688² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38243776688.

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, 2057645 + ... + 2076147.

It is an arithmetic number, because the mean of its divisors is an integer number (1052026416).

Almost surely, 2^38243776688 is an apocalyptic number.

38243776688 is a gapful number since it is divisible by the number (38) 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 38243776688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42081056640).

38243776688 is an abundant number, since it is smaller than the sum of its proper divisors (45918336592).

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

38243776688 is a wasteful number, since it uses less digits than its factorization.

38243776688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19066 (or 19060 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 62.

The spelling of 38243776688 in words is "thirty-eight billion, two hundred forty-three million, seven hundred seventy-six thousand, six hundred eighty-eight".