38172730761 has 48 divisors (see below), whose sum is σ = 62413565760. Its totient is φ = 23122091520.

The previous prime is 38172730747. The next prime is 38172730787. The reversal of 38172730761 is 16703727183.

It is not a de Polignac number, because 38172730761 - 2¹⁰ = 38172729737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38172730061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7292001 + ... + 7297233.

It is an arithmetic number, because the mean of its divisors is an integer number (1300282620).

Almost surely, 2^38172730761 is an apocalyptic number.

It is an amenable number.

38172730761 is a deficient number, since it is larger than the sum of its proper divisors (24240834999).

38172730761 is a wasteful number, since it uses less digits than its factorization.

38172730761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7988 (or 7976 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 38172730761 in words is "thirty-eight billion, one hundred seventy-two million, seven hundred thirty thousand, seven hundred sixty-one".