2191659329670 has 32 divisors (see below), whose sum is σ = 5346211615200. Its totient is φ = 574861463040.

The previous prime is 2191659329659. The next prime is 2191659329677. The reversal of 2191659329670 is 769239561912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191659329677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598812195 + ... + 598815854.

It is an arithmetic number, because the mean of its divisors is an integer number (167069112975).

Almost surely, 2^{2191659329670} is an apocalyptic number.

2191659329670 is an abundant number, since it is smaller than the sum of its proper divisors (3154552285530).

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

2191659329670 is a wasteful number, since it uses less digits than its factorization.

2191659329670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197628120.

The product of its (nonzero) digits is 11022480, while the sum is 60.

The spelling of 2191659329670 in words is "two trillion, one hundred ninety-one billion, six hundred fifty-nine million, three hundred twenty-nine thousand, six hundred seventy".