679158501279 has 4 divisors (see below), whose sum is σ = 905544668376. Its totient is φ = 452772334184.

The previous prime is 679158501277. The next prime is 679158501289. The reversal of 679158501279 is 972105851976.

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 679158501279 - 2¹ = 679158501277 is a prime.

It is a super-2 number, since 2×679158501279² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679158501277) 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, 113193083544 + ... + 113193083549.

It is an arithmetic number, because the mean of its divisors is an integer number (226386167094).

Almost surely, 2^679158501279 is an apocalyptic number.

679158501279 is a deficient number, since it is larger than the sum of its proper divisors (226386167097).

679158501279 is a wasteful number, since it uses less digits than its factorization.

679158501279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226386167096.

The product of its (nonzero) digits is 9525600, while the sum is 60.

The spelling of 679158501279 in words is "six hundred seventy-nine billion, one hundred fifty-eight million, five hundred one thousand, two hundred seventy-nine".