1108857079657 has 18 divisors (see below), whose sum is σ = 1155594541374. Its totient is φ = 1063789225920.

The previous prime is 1108857079643. The next prime is 1108857079691. The reversal of 1108857079657 is 7569707588011.

It can be written as a sum of positive squares in 3 ways, for example, as 660585319696 + 448271759961 = 812764^2 + 669531^2 .

It is not a de Polignac number, because 1108857079657 - 2¹⁵ = 1108857046889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1108857079457) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 332888482 + ... + 332891812.

It is an arithmetic number, because the mean of its divisors is an integer number (64199696743).

Almost surely, 2^{1108857079657} is an apocalyptic number.

It is an amenable number.

1108857079657 is a deficient number, since it is larger than the sum of its proper divisors (46737461717).

1108857079657 is an frugal number, since it uses more digits than its factorization.

1108857079657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 64.

The spelling of 1108857079657 in words is "one trillion, one hundred eight billion, eight hundred fifty-seven million, seventy-nine thousand, six hundred fifty-seven".