2115171705210 has 64 divisors (see below), whose sum is σ = 5358476851200. Its totient is φ = 532870650432.

The previous prime is 2115171705203. The next prime is 2115171705223. The reversal of 2115171705210 is 125071715112.

It is a super-2 number, since 2×2115171705210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4963654 + ... + 5372913.

It is an arithmetic number, because the mean of its divisors is an integer number (83726200800).

Almost surely, 2^{2115171705210} is an apocalyptic number.

2115171705210 is an abundant number, since it is smaller than the sum of its proper divisors (3243305145990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2115171705210 is a wasteful number, since it uses less digits than its factorization.

2115171705210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10336955.

The product of its (nonzero) digits is 4900, while the sum is 33.

The spelling of 2115171705210 in words is "two trillion, one hundred fifteen billion, one hundred seventy-one million, seven hundred five thousand, two hundred ten".