679155840000 has 1320 divisors, whose sum is σ = 2779294566048. Its totient is φ = 164229120000.

The previous prime is 679155839939. The next prime is 679155840017. The reversal of 679155840000 is 48551976.

679155840000 is a `hidden beast` number, since 6 + 7 + 91 + 558 + 4 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1320).

It is a super-2 number, since 2×679155840000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1710719802 + ... + 1710720198.

Almost surely, 2^679155840000 is an apocalyptic number.

679155840000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679155840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389647283024).

679155840000 is an abundant number, since it is smaller than the sum of its proper divisors (2100138726048).

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

679155840000 is an equidigital number, since it uses as much as digits as its factorization.

679155840000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 679155840000 in words is "six hundred seventy-nine billion, one hundred fifty-five million, eight hundred forty thousand".