79851305855 has 16 divisors (see below), whose sum is σ = 96010147584. Its totient is φ = 63755450880.

The previous prime is 79851305827. The next prime is 79851305867. The reversal of 79851305855 is 55850315897.

It is a happy number.

It is not a de Polignac number, because 79851305855 - 2¹⁸ = 79851043711 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 79851305855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5865917 + ... + 5879513.

It is an arithmetic number, because the mean of its divisors is an integer number (6000634224).

Almost surely, 2^79851305855 is an apocalyptic number.

79851305855 is a deficient number, since it is larger than the sum of its proper divisors (16158841729).

79851305855 is a wasteful number, since it uses less digits than its factorization.

79851305855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15826.

The product of its (nonzero) digits is 7560000, while the sum is 56.

The spelling of 79851305855 in words is "seventy-nine billion, eight hundred fifty-one million, three hundred five thousand, eight hundred fifty-five".