38697911808 has 160 divisors (see below), whose sum is σ = 106938200160. Its totient is φ = 12420710400.

The previous prime is 38697911803. The next prime is 38697911831. The reversal of 38697911808 is 80811979683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38697911803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20355658 + ... + 20357558.

It is an arithmetic number, because the mean of its divisors is an integer number (668363751).

Almost surely, 2^38697911808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38697911808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53469100080).

38697911808 is an abundant number, since it is smaller than the sum of its proper divisors (68240288352).

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

38697911808 is a wasteful number, since it uses less digits than its factorization.

38697911808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2392 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 38697911808 in words is "thirty-eight billion, six hundred ninety-seven million, nine hundred eleven thousand, eight hundred eight".