38679520497 has 4 divisors (see below), whose sum is σ = 51572694000. Its totient is φ = 25786346996.

The previous prime is 38679520483. The next prime is 38679520513. The reversal of 38679520497 is 79402597683.

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.

It is a cyclic number.

It is not a de Polignac number, because 38679520497 - 2¹² = 38679516401 is a prime.

It is a super-2 number, since 2×38679520497² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38679520497.

It is not an unprimeable number, because it can be changed into a prime (38679520447) 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, 6446586747 + ... + 6446586752.

It is an arithmetic number, because the mean of its divisors is an integer number (12893173500).

Almost surely, 2^38679520497 is an apocalyptic number.

It is an amenable number.

38679520497 is a deficient number, since it is larger than the sum of its proper divisors (12893173503).

38679520497 is a wasteful number, since it uses less digits than its factorization.

38679520497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893173502.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 38679520497 in words is "thirty-eight billion, six hundred seventy-nine million, five hundred twenty thousand, four hundred ninety-seven".