79678205880 has 256 divisors, whose sum is σ = 294701137920. Its totient is φ = 16782391296.

The previous prime is 79678205861. The next prime is 79678205911. The reversal of 79678205880 is 8850287697.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 6688009 + ... + 6699911.

It is an arithmetic number, because the mean of its divisors is an integer number (1151176320).

Almost surely, 2^79678205880 is an apocalyptic number.

79678205880 is a gapful number since it is divisible by the number (70) 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 79678205880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147350568960).

79678205880 is an abundant number, since it is smaller than the sum of its proper divisors (215022932040).

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

79678205880 is a wasteful number, since it uses less digits than its factorization.

79678205880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12550 (or 12546 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 79678205880 in words is "seventy-nine billion, six hundred seventy-eight million, two hundred five thousand, eight hundred eighty".