2108031917565 has 32 divisors (see below), whose sum is σ = 3920020623360. Its totient is φ = 947338311744.

The previous prime is 2108031917531. The next prime is 2108031917581. The reversal of 2108031917565 is 5657191308012.

It is not a de Polignac number, because 2108031917565 - 2⁷ = 2108031917437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170133589 + ... + 170145978.

It is an arithmetic number, because the mean of its divisors is an integer number (122500644480).

Almost surely, 2^{2108031917565} is an apocalyptic number.

It is an amenable number.

2108031917565 is a deficient number, since it is larger than the sum of its proper divisors (1811988705795).

2108031917565 is a wasteful number, since it uses less digits than its factorization.

2108031917565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340279641.

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 2108031917565 in words is "two trillion, one hundred eight billion, thirty-one million, nine hundred seventeen thousand, five hundred sixty-five".