79799660928 has 192 divisors, whose sum is σ = 247514183280. Its totient is φ = 24532070400.

The previous prime is 79799660921. The next prime is 79799660933. The reversal of 79799660928 is 82906699797.

79799660928 is a `hidden beast` number, since 7 + 9 + 7 + 9 + 9 + 6 + 609 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79799660921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28467975 + ... + 28470777.

Almost surely, 2^79799660928 is an apocalyptic number.

79799660928 is a gapful number since it is divisible by the number (78) 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 79799660928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123757091640).

79799660928 is an abundant number, since it is smaller than the sum of its proper divisors (167714522352).

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

79799660928 is a wasteful number, since it uses less digits than its factorization.

79799660928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737 (or 4722 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 72.

The spelling of 79799660928 in words is "seventy-nine billion, seven hundred ninety-nine million, six hundred sixty thousand, nine hundred twenty-eight".