679149174969431 has 4 divisors (see below), whose sum is σ = 679290634914864. Its totient is φ = 679007715024000.

The previous prime is 679149174969389. The next prime is 679149174969443. The reversal of 679149174969431 is 134969471941976.

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 679149174969431 - 2⁶ = 679149174969367 is a prime.

It is a super-2 number, since 2×679149174969431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679149174369431) 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, 70729965515 + ... + 70729975116.

It is an arithmetic number, because the mean of its divisors is an integer number (169822658728716).

Almost surely, 2^{679149174969431} is an apocalyptic number.

679149174969431 is a deficient number, since it is larger than the sum of its proper divisors (141459945433).

679149174969431 is a wasteful number, since it uses less digits than its factorization.

679149174969431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141459945432.

The product of its digits is 2222131968, while the sum is 80.

The spelling of 679149174969431 in words is "six hundred seventy-nine trillion, one hundred forty-nine billion, one hundred seventy-four million, nine hundred sixty-nine thousand, four hundred thirty-one".