79217065361 has 16 divisors (see below), whose sum is σ = 90808800768. Its totient is φ = 67694400000.

The previous prime is 79217065349. The next prime is 79217065363. The reversal of 79217065361 is 16356071297.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79217065361 - 2¹⁰ = 79217064337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79217065363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3146921 + ... + 3171993.

It is an arithmetic number, because the mean of its divisors is an integer number (5675550048).

Almost surely, 2^79217065361 is an apocalyptic number.

It is an amenable number.

79217065361 is a deficient number, since it is larger than the sum of its proper divisors (11591735407).

79217065361 is a wasteful number, since it uses less digits than its factorization.

79217065361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26432.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 79217065361 in words is "seventy-nine billion, two hundred seventeen million, sixty-five thousand, three hundred sixty-one".