79958455785 has 24 divisors (see below), whose sum is σ = 149255785224. Its totient is φ = 39364162560.

The previous prime is 79958455783. The next prime is 79958455789. The reversal of 79958455785 is 58755485997.

79958455785 is a `hidden beast` number, since 7 + 9 + 9 + 5 + 8 + 45 + 578 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18400379904 + 61558075881 = 135648^2 + 248109^2 .

It is not a de Polignac number, because 79958455785 - 2¹ = 79958455783 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79958455783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68339976 + ... + 68341145.

It is an arithmetic number, because the mean of its divisors is an integer number (6218991051).

Almost surely, 2^79958455785 is an apocalyptic number.

It is an amenable number.

79958455785 is a deficient number, since it is larger than the sum of its proper divisors (69297329439).

79958455785 is a wasteful number, since it uses less digits than its factorization.

79958455785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136681145 (or 136681142 counting only the distinct ones).

The product of its digits is 635040000, while the sum is 72.

The spelling of 79958455785 in words is "seventy-nine billion, nine hundred fifty-eight million, four hundred fifty-five thousand, seven hundred eighty-five".