79663191552 has 960 divisors, whose sum is σ = 294275165184. Its totient is φ = 21021327360.

The previous prime is 79663191541. The next prime is 79663191599. The reversal of 79663191552 is 25519136697.

79663191552 is a `hidden beast` number, since 79 + 6 + 6 + 3 + 19 + 1 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 821269968 + ... + 821270064.

Almost surely, 2^79663191552 is an apocalyptic number.

79663191552 is a gapful number since it is divisible by the number (72) 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 79663191552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147137582592).

79663191552 is an abundant number, since it is smaller than the sum of its proper divisors (214611973632).

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

79663191552 is an equidigital number, since it uses as much as digits as its factorization.

79663191552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 173 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The spelling of 79663191552 in words is "seventy-nine billion, six hundred sixty-three million, one hundred ninety-one thousand, five hundred fifty-two".