79689194073 has 12 divisors (see below), whose sum is σ = 115112230740. Its totient is φ = 53123536896.

The previous prime is 79689194059. The next prime is 79689194077. The reversal of 79689194073 is 37049198697.

It can be written as a sum of positive squares in 2 ways, for example, as 30559584969 + 49129609104 = 174813^2 + 221652^2 .

It is not a de Polignac number, because 79689194073 - 2¹⁷ = 79689063001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79689194073.

It is not an unprimeable number, because it can be changed into a prime (79689194077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11136 + ... + 399377.

It is an arithmetic number, because the mean of its divisors is an integer number (9592685895).

Almost surely, 2^79689194073 is an apocalyptic number.

It is an amenable number.

79689194073 is a deficient number, since it is larger than the sum of its proper divisors (35423036667).

79689194073 is a wasteful number, since it uses less digits than its factorization.

79689194073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432088 (or 432085 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 79689194073 in words is "seventy-nine billion, six hundred eighty-nine million, one hundred ninety-four thousand, seventy-three".