79411691520 has 960 divisors, whose sum is σ = 338218352640. Its totient is φ = 17284202496.

The previous prime is 79411691503. The next prime is 79411691531. The reversal of 79411691520 is 2519611497.

79411691520 is a `hidden beast` number, since 7 + 9 + 4 + 116 + 9 + 1 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 356106129 + ... + 356106351.

It is an arithmetic number, because the mean of its divisors is an integer number (352310784).

Almost surely, 2^79411691520 is an apocalyptic number.

79411691520 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 79411691520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169109176320).

79411691520 is an abundant number, since it is smaller than the sum of its proper divisors (258806661120).

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

79411691520 is a wasteful number, since it uses less digits than its factorization.

79411691520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 79411691520 in words is "seventy-nine billion, four hundred eleven million, six hundred ninety-one thousand, five hundred twenty".