108979547257 has 6 divisors (see below), whose sum is σ = 126772126458. Its totient is φ = 93411040464.

The previous prime is 108979547233. The next prime is 108979547273. The reversal of 108979547257 is 752745979801.

It can be written as a sum of positive squares in only one way, i.e., 108923761296 + 55785961 = 330036^2 + 7469^2 .

It is not a de Polignac number, because 108979547257 - 2²⁷ = 108845329529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108979547207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1112036148 + ... + 1112036245.

It is an arithmetic number, because the mean of its divisors is an integer number (21128687743).

Almost surely, 2^108979547257 is an apocalyptic number.

It is an amenable number.

108979547257 is a deficient number, since it is larger than the sum of its proper divisors (17792579201).

108979547257 is an equidigital number, since it uses as much as digits as its factorization.

108979547257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224072407 (or 2224072400 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 64.

The spelling of 108979547257 in words is "one hundred eight billion, nine hundred seventy-nine million, five hundred forty-seven thousand, two hundred fifty-seven".