37981599996 has 12 divisors (see below), whose sum is σ = 88623733352. Its totient is φ = 12660533328.

The previous prime is 37981599979. The next prime is 37981600031. The reversal of 37981599996 is 69999518973.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×37981599996² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582566655 + ... + 1582566678.

Almost surely, 2^37981599996 is an apocalyptic number.

It is an amenable number.

37981599996 is an abundant number, since it is smaller than the sum of its proper divisors (50642133356).

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

37981599996 is a wasteful number, since it uses less digits than its factorization.

37981599996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165133340 (or 3165133338 counting only the distinct ones).

The product of its digits is 297606960, while the sum is 75.

The spelling of 37981599996 in words is "thirty-seven billion, nine hundred eighty-one million, five hundred ninety-nine thousand, nine hundred ninety-six".