679191367641 has 4 divisors (see below), whose sum is σ = 905588490192. Its totient is φ = 452794245092.

The previous prime is 679191367553. The next prime is 679191367663. The reversal of 679191367641 is 146763191976.

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 679191367641 - 2⁷ = 679191367513 is a prime.

It is a super-2 number, since 2×679191367641² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679191360641) 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, 113198561271 + ... + 113198561276.

It is an arithmetic number, because the mean of its divisors is an integer number (226397122548).

Almost surely, 2^679191367641 is an apocalyptic number.

It is an amenable number.

679191367641 is a deficient number, since it is larger than the sum of its proper divisors (226397122551).

679191367641 is a wasteful number, since it uses less digits than its factorization.

679191367641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226397122550.

The product of its digits is 10287648, while the sum is 60.

The spelling of 679191367641 in words is "six hundred seventy-nine billion, one hundred ninety-one million, three hundred sixty-seven thousand, six hundred forty-one".