679054459872 has 48 divisors (see below), whose sum is σ = 1790511367680. Its totient is φ = 225336450432.

The previous prime is 679054459871. The next prime is 679054459901. The reversal of 679054459872 is 278954450976.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×679054459872² (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 (679054459871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15838422 + ... + 15881237.

It is an arithmetic number, because the mean of its divisors is an integer number (37302320160).

Almost surely, 2^679054459872 is an apocalyptic number.

It is an amenable number.

679054459872 is an abundant number, since it is smaller than the sum of its proper divisors (1111456907808).

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

679054459872 is a wasteful number, since it uses less digits than its factorization.

679054459872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31719895 (or 31719887 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 66.

The spelling of 679054459872 in words is "six hundred seventy-nine billion, fifty-four million, four hundred fifty-nine thousand, eight hundred seventy-two".