38553772979 has 4 divisors (see below), whose sum is σ = 38565760584. Its totient is φ = 38541785376.

The previous prime is 38553772913. The next prime is 38553773003. The reversal of 38553772979 is 97927735583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38553772979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38553762979) 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, 5988977 + ... + 5995410.

It is an arithmetic number, because the mean of its divisors is an integer number (9641440146).

Almost surely, 2^38553772979 is an apocalyptic number.

38553772979 is a deficient number, since it is larger than the sum of its proper divisors (11987605).

38553772979 is a wasteful number, since it uses less digits than its factorization.

38553772979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11987604.

The product of its digits is 100018800, while the sum is 65.

The spelling of 38553772979 in words is "thirty-eight billion, five hundred fifty-three million, seven hundred seventy-two thousand, nine hundred seventy-nine".