9655973657 has 16 divisors (see below), whose sum is σ = 10822933824. Its totient is φ = 8537400000.

The previous prime is 9655973627. The next prime is 9655973759. The reversal of 9655973657 is 7563795569.

It is a cyclic number.

It is not a de Polignac number, because 9655973657 - 2⁸ = 9655973401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9655973657.

It is not an unprimeable number, because it can be changed into a prime (9655973617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1890407 + ... + 1895507.

It is an arithmetic number, because the mean of its divisors is an integer number (676433364).

Almost surely, 2^9655973657 is an apocalyptic number.

It is an amenable number.

9655973657 is a deficient number, since it is larger than the sum of its proper divisors (1166960167).

9655973657 is a wasteful number, since it uses less digits than its factorization.

9655973657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9800.

The product of its digits is 53581500, while the sum is 62.

The square root of 9655973657 is about 98264.8139315391. The cubic root of 9655973657 is about 2129.4397533930.

The spelling of 9655973657 in words is "nine billion, six hundred fifty-five million, nine hundred seventy-three thousand, six hundred fifty-seven".