679421204079552 has 168 divisors, whose sum is σ = 2131179875119152. Its totient is φ = 205235732582400.

The previous prime is 679421204079523. The next prime is 679421204079571. The reversal of 679421204079552 is 255970402124976.

It is a happy number.

679421204079552 is a `hidden beast` number, since 6 + 7 + 9 + 4 + 2 + 1 + 2 + 0 + 4 + 0 + 79 + 552 = 666.

It is a super-2 number, since 2×679421204079552² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679421204079552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167126949 + ... + 171143972.

Almost surely, 2^{679421204079552} is an apocalyptic number.

It is an amenable number.

679421204079552 is an abundant number, since it is smaller than the sum of its proper divisors (1451758671039600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679421204079552 is a wasteful number, since it uses less digits than its factorization.

679421204079552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338271267 (or 338271254 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 679421204079552 in words is "six hundred seventy-nine trillion, four hundred twenty-one billion, two hundred four million, seventy-nine thousand, five hundred fifty-two".