38997215824 has 160 divisors (see below), whose sum is σ = 94649942016. Its totient is φ = 15179028480.

The previous prime is 38997215801. The next prime is 38997215833. The reversal of 38997215824 is 42851279983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27327399 + ... + 27328825.

Almost surely, 2^38997215824 is an apocalyptic number.

38997215824 is a gapful number since it is divisible by the number (34) 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 38997215824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47324971008).

38997215824 is an abundant number, since it is smaller than the sum of its proper divisors (55652726192).

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

38997215824 is a wasteful number, since it uses less digits than its factorization.

38997215824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953 (or 1947 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The spelling of 38997215824 in words is "thirty-eight billion, nine hundred ninety-seven million, two hundred fifteen thousand, eight hundred twenty-four".