2170939793349 has 4 divisors (see below), whose sum is σ = 2894586391136. Its totient is φ = 1447293195564.

The previous prime is 2170939793251. The next prime is 2170939793389. The reversal of 2170939793349 is 9433979390712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2170939793349 - 2³⁵ = 2136580054981 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 2170939793349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170939793389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361823298889 + ... + 361823298894.

It is an arithmetic number, because the mean of its divisors is an integer number (723646597784).

Almost surely, 2^{2170939793349} is an apocalyptic number.

It is an amenable number.

2170939793349 is a deficient number, since it is larger than the sum of its proper divisors (723646597787).

2170939793349 is an equidigital number, since it uses as much as digits as its factorization.

2170939793349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723646597786.

The product of its (nonzero) digits is 69441624, while the sum is 66.

The spelling of 2170939793349 in words is "two trillion, one hundred seventy billion, nine hundred thirty-nine million, seven hundred ninety-three thousand, three hundred forty-nine".