79697136960 has 504 divisors, whose sum is σ = 332822580480. Its totient is φ = 17143676928.

The previous prime is 79697136941. The next prime is 79697136971. The reversal of 79697136960 is 6963179697.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5819401 + ... + 5833079.

Almost surely, 2^79697136960 is an apocalyptic number.

79697136960 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 79697136960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166411290240).

79697136960 is an abundant number, since it is smaller than the sum of its proper divisors (253125443520).

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

79697136960 is a wasteful number, since it uses less digits than its factorization.

79697136960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13743 (or 13713 counting only the distinct ones).

The product of its (nonzero) digits is 23147208, while the sum is 63.

It can be divided in two parts, 7969 and 7136960, that added together give a square (7144929 = 2673²).

The spelling of 79697136960 in words is "seventy-nine billion, six hundred ninety-seven million, one hundred thirty-six thousand, nine hundred sixty".