79481008505 has 8 divisors (see below), whose sum is σ = 97954972872. Its totient is φ = 61866298368.

The previous prime is 79481008501. The next prime is 79481008543. The reversal of 79481008505 is 50580018497.

It can be written as a sum of positive squares in 4 ways, for example, as 40069229929 + 39411778576 = 200173^2 + 198524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79481008505 - 2² = 79481008501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79481008505.

It is not an unprimeable number, because it can be changed into a prime (79481008501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214813352 + ... + 214813721.

It is an arithmetic number, because the mean of its divisors is an integer number (12244371609).

Almost surely, 2^79481008505 is an apocalyptic number.

It is an amenable number.

79481008505 is a deficient number, since it is larger than the sum of its proper divisors (18473964367).

79481008505 is a wasteful number, since it uses less digits than its factorization.

79481008505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429627115.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 79481008505 in words is "seventy-nine billion, four hundred eighty-one million, eight thousand, five hundred five".