38637325081 has 4 divisors (see below), whose sum is σ = 38639870464. Its totient is φ = 38634779700.

The previous prime is 38637325061. The next prime is 38637325159. The reversal of 38637325081 is 18052373683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18052373683 = 683 ⋅26431001.

It is a cyclic number.

It is not a de Polignac number, because 38637325081 - 2¹¹ = 38637323033 is a prime.

It is a super-2 number, since 2×38637325081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38637325061) 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, 1249785 + ... + 1280326.

It is an arithmetic number, because the mean of its divisors is an integer number (9659967616).

Almost surely, 2^38637325081 is an apocalyptic number.

It is an amenable number.

38637325081 is a deficient number, since it is larger than the sum of its proper divisors (2545383).

38637325081 is a wasteful number, since it uses less digits than its factorization.

38637325081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545382.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 38637325081 in words is "thirty-eight billion, six hundred thirty-seven million, three hundred twenty-five thousand, eighty-one".