79886107505 has 8 divisors (see below), whose sum is σ = 97902974592. Its totient is φ = 62549122288.

The previous prime is 79886107493. The next prime is 79886107523. The reversal of 79886107505 is 50570168897.

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 79886107505 - 2⁴ = 79886107489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 169970207 + ... + 169970676.

It is an arithmetic number, because the mean of its divisors is an integer number (12237871824).

Almost surely, 2^79886107505 is an apocalyptic number.

It is an amenable number.

79886107505 is a deficient number, since it is larger than the sum of its proper divisors (18016867087).

79886107505 is a wasteful number, since it uses less digits than its factorization.

79886107505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339940935.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The spelling of 79886107505 in words is "seventy-nine billion, eight hundred eighty-six million, one hundred seven thousand, five hundred five".