17979045379 has 4 divisors (see below), whose sum is σ = 17993747376. Its totient is φ = 17964343384.

The previous prime is 17979045367. The next prime is 17979045401. The reversal of 17979045379 is 97354097971.

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

It is a cyclic number.

It is not a de Polignac number, because 17979045379 - 2⁷ = 17979045251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17979045779) 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, 7349164 + ... + 7351609.

It is an arithmetic number, because the mean of its divisors is an integer number (4498436844).

Almost surely, 2^17979045379 is an apocalyptic number.

17979045379 is a deficient number, since it is larger than the sum of its proper divisors (14701997).

17979045379 is a wasteful number, since it uses less digits than its factorization.

17979045379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14701996.

The product of its (nonzero) digits is 15002820, while the sum is 61.

The spelling of 17979045379 in words is "seventeen billion, nine hundred seventy-nine million, forty-five thousand, three hundred seventy-nine".