38401375502581 has 12 divisors (see below), whose sum is σ = 48107217663372. Its totient is φ = 30383505891648.

The previous prime is 38401375502579. The next prime is 38401375502587. The reversal of 38401375502581 is 18520557310483.

It can be written as a sum of positive squares in 2 ways, for example, as 2666146871556 + 35735228631025 = 1632834^2 + 5977895^2 .

It is not a de Polignac number, because 38401375502581 - 2¹ = 38401375502579 is a prime.

It is a super-2 number, since 2×38401375502581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38401375502587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30142366320 + ... + 30142367593.

It is an arithmetic number, because the mean of its divisors is an integer number (4008934805281).

Almost surely, 2^{38401375502581} is an apocalyptic number.

It is an amenable number.

38401375502581 is a deficient number, since it is larger than the sum of its proper divisors (9705842160791).

38401375502581 is a wasteful number, since it uses less digits than its factorization.

38401375502581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60284733940 (or 60284733933 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 52.

The spelling of 38401375502581 in words is "thirty-eight trillion, four hundred one billion, three hundred seventy-five million, five hundred two thousand, five hundred eighty-one".