38380091520 has 128 divisors (see below), whose sum is σ = 123044754240. Its totient is φ = 10175442944.

The previous prime is 38380091507. The next prime is 38380091549. The reversal of 38380091520 is 2519008383.

It is a tau number, because it is divible by the number of its divisors (128).

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, 274387 + ... + 389933.

Almost surely, 2^38380091520 is an apocalyptic number.

38380091520 is a gapful number since it is divisible by the number (30) 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 38380091520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61522377120).

38380091520 is an abundant number, since it is smaller than the sum of its proper divisors (84664662720).

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

38380091520 is a wasteful number, since it uses less digits than its factorization.

38380091520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115742 (or 115730 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 38380091520 in words is "thirty-eight billion, three hundred eighty million, ninety-one thousand, five hundred twenty".