2172111593959 has 4 divisors (see below), whose sum is σ = 2218326734304. Its totient is φ = 2125896453616.

The previous prime is 2172111593957. The next prime is 2172111593963. The reversal of 2172111593959 is 9593951112712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2172111593959 - 2¹ = 2172111593957 is a prime.

It is a super-2 number, since 2×2172111593959² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172111593957) 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, 23107570102 + ... + 23107570195.

It is an arithmetic number, because the mean of its divisors is an integer number (554581683576).

Almost surely, 2^{2172111593959} is an apocalyptic number.

2172111593959 is a deficient number, since it is larger than the sum of its proper divisors (46215140345).

2172111593959 is an equidigital number, since it uses as much as digits as its factorization.

2172111593959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46215140344.

The product of its digits is 1530900, while the sum is 55.

The spelling of 2172111593959 in words is "two trillion, one hundred seventy-two billion, one hundred eleven million, five hundred ninety-three thousand, nine hundred fifty-nine".