108725040657 has 24 divisors (see below), whose sum is σ = 164040052800. Its totient is φ = 69304461408.

The previous prime is 108725040653. The next prime is 108725040679. The reversal of 108725040657 is 756040527801.

108725040657 is a `hidden beast` number, since 1 + 0 + 87 + 2 + 504 + 0 + 65 + 7 = 666.

It is not a de Polignac number, because 108725040657 - 2² = 108725040653 is a prime.

It is a super-3 number, since 3×108725040657³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (108725040653) 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, 1995307 + ... + 2049072.

It is an arithmetic number, because the mean of its divisors is an integer number (6835002200).

Almost surely, 2^108725040657 is an apocalyptic number.

It is an amenable number.

108725040657 is a deficient number, since it is larger than the sum of its proper divisors (55315012143).

108725040657 is a wasteful number, since it uses less digits than its factorization.

108725040657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044517 (or 4044514 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 108725040657 in words is "one hundred eight billion, seven hundred twenty-five million, forty thousand, six hundred fifty-seven".