79844295690 has 24 divisors (see below), whose sum is σ = 207595169028. Its totient is φ = 21291812160.

The previous prime is 79844295653. The next prime is 79844295721. The reversal of 79844295690 is 9659244897.

79844295690 is a `hidden beast` number, since 7 + 9 + 8 + 44 + 29 + 569 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73277948601 + 6566347089 = 270699^2 + 81033^2 .

It is a super-2 number, since 2×79844295690² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 443579331 + ... + 443579510.

Almost surely, 2^79844295690 is an apocalyptic number.

79844295690 is an abundant number, since it is smaller than the sum of its proper divisors (127750873338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79844295690 is a wasteful number, since it uses less digits than its factorization.

79844295690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887158854 (or 887158851 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 79844295690 in words is "seventy-nine billion, eight hundred forty-four million, two hundred ninety-five thousand, six hundred ninety".