679755638378 has 16 divisors (see below), whose sum is σ = 1064350990080. Its totient is φ = 325218352800.

The previous prime is 679755638377. The next prime is 679755638453. The reversal of 679755638378 is 873836557976.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (679755638377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61588868 + ... + 61599903.

It is an arithmetic number, because the mean of its divisors is an integer number (66521936880).

Almost surely, 2^679755638378 is an apocalyptic number.

679755638378 is a deficient number, since it is larger than the sum of its proper divisors (384595351702).

679755638378 is a wasteful number, since it uses less digits than its factorization.

679755638378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123188893.

The product of its digits is 1600300800, while the sum is 74.

The spelling of 679755638378 in words is "six hundred seventy-nine billion, seven hundred fifty-five million, six hundred thirty-eight thousand, three hundred seventy-eight".