38997712908 has 432 divisors, whose sum is σ = 129511782400. Its totient is φ = 9877412160.

The previous prime is 38997712891. The next prime is 38997712927. The reversal of 38997712908 is 80921779983.

It is a super-3 number, since 3×38997712908³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 143 ways as a sum of consecutive naturals, for example, 64246341 + ... + 64246947.

Almost surely, 2^38997712908 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 38997712908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64755891200).

38997712908 is an abundant number, since it is smaller than the sum of its proper divisors (90514069492).

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

38997712908 is a wasteful number, since it uses less digits than its factorization.

38997712908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 63.

The spelling of 38997712908 in words is "thirty-eight billion, nine hundred ninety-seven million, seven hundred twelve thousand, nine hundred eight".