38994491763968 has 36 divisors (see below), whose sum is σ = 83824096785828. Its totient is φ = 17997457735680.

The previous prime is 38994491763967. The next prime is 38994491763977. The reversal of 38994491763968 is 86936719449983.

It can be written as a sum of positive squares in 2 ways, for example, as 17485377128704 + 21509114635264 = 4181552^2 + 4637792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38994491763968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38994491763967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5858544113 + ... + 5858550768.

Almost surely, 2^{38994491763968} is an apocalyptic number.

It is an amenable number.

38994491763968 is an abundant number, since it is smaller than the sum of its proper divisors (44829605021860).

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

38994491763968 is a wasteful number, since it uses less digits than its factorization.

38994491763968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11717094910 (or 11717094896 counting only the distinct ones).

The product of its digits is 15237476352, while the sum is 86.

The spelling of 38994491763968 in words is "thirty-eight trillion, nine hundred ninety-four billion, four hundred ninety-one million, seven hundred sixty-three thousand, nine hundred sixty-eight".