79734397563 has 6 divisors (see below), whose sum is σ = 115171907604. Its totient is φ = 53156265036.

The previous prime is 79734397559. The next prime is 79734397583. The reversal of 79734397563 is 36579343797.

79734397563 is a `hidden beast` number, since 7 + 9 + 7 + 34 + 39 + 7 + 563 = 666.

It is not a de Polignac number, because 79734397563 - 2² = 79734397559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79734397563.

It is not an unprimeable number, because it can be changed into a prime (79734397583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4429688745 + ... + 4429688762.

It is an arithmetic number, because the mean of its divisors is an integer number (19195317934).

Almost surely, 2^79734397563 is an apocalyptic number.

79734397563 is a deficient number, since it is larger than the sum of its proper divisors (35437510041).

79734397563 is a wasteful number, since it uses less digits than its factorization.

79734397563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8859377513 (or 8859377510 counting only the distinct ones).

The product of its digits is 90016920, while the sum is 63.

The spelling of 79734397563 in words is "seventy-nine billion, seven hundred thirty-four million, three hundred ninety-seven thousand, five hundred sixty-three".