79663504536 has 576 divisors, whose sum is σ = 291810055680. Its totient is φ = 19769080320.

The previous prime is 79663504499. The next prime is 79663504537. The reversal of 79663504536 is 63540536697.

79663504536 is a `hidden beast` number, since 79 + 6 + 6 + 35 + 0 + 4 + 536 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79663504537) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 92955820 + ... + 92956676.

It is an arithmetic number, because the mean of its divisors is an integer number (506614680).

Almost surely, 2^79663504536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79663504536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145905027840).

79663504536 is an abundant number, since it is smaller than the sum of its proper divisors (212146551144).

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

79663504536 is a wasteful number, since it uses less digits than its factorization.

79663504536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 54.

The spelling of 79663504536 in words is "seventy-nine billion, six hundred sixty-three million, five hundred four thousand, five hundred thirty-six".