79761215798 has 16 divisors (see below), whose sum is σ = 130679317440. Its totient is φ = 36210385800.

The previous prime is 79761215789. The next prime is 79761215839. The reversal of 79761215798 is 89751216797.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 79761215798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2217368 + ... + 2253051.

It is an arithmetic number, because the mean of its divisors is an integer number (8167457340).

Almost surely, 2^79761215798 is an apocalyptic number.

79761215798 is a deficient number, since it is larger than the sum of its proper divisors (50918101642).

79761215798 is a wasteful number, since it uses less digits than its factorization.

79761215798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471243.

The product of its digits is 13335840, while the sum is 62.

Subtracting 79761215798 from its reverse (89751216797), we obtain a palindrome (9990000999).

The spelling of 79761215798 in words is "seventy-nine billion, seven hundred sixty-one million, two hundred fifteen thousand, seven hundred ninety-eight".