190055879105921 has 4 divisors (see below), whose sum is σ = 190055931213744. Its totient is φ = 190055826998100.

The previous prime is 190055879105881. The next prime is 190055879105923. The reversal of 190055879105921 is 129501978550091.

190055879105921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 190055879105921 - 2³⁰ = 190054805364097 is a prime.

It is a super-2 number, since 2×190055879105921² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190055879105923) 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, 20134595 + ... + 28027016.

It is an arithmetic number, because the mean of its divisors is an integer number (47513982803436).

Almost surely, 2^{190055879105921} is an apocalyptic number.

It is an amenable number.

190055879105921 is a deficient number, since it is larger than the sum of its proper divisors (52107823).

190055879105921 is an equidigital number, since it uses as much as digits as its factorization.

190055879105921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52107822.

The product of its (nonzero) digits is 10206000, while the sum is 62.

The spelling of 190055879105921 in words is "one hundred ninety trillion, fifty-five billion, eight hundred seventy-nine million, one hundred five thousand, nine hundred twenty-one".