190990820801568 has 48 divisors (see below), whose sum is σ = 505950454215360. Its totient is φ = 63079537142016.

The previous prime is 190990820801563. The next prime is 190990820801611. The reversal of 190990820801568 is 865108028099091.

190990820801568 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 190990820801499 and 190990820801508.

It is not an unprimeable number, because it can be changed into a prime (190990820801563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9126079980 + ... + 9126100907.

It is an arithmetic number, because the mean of its divisors is an integer number (10540634462820).

Almost surely, 2^{190990820801568} is an apocalyptic number.

It is an amenable number.

190990820801568 is an abundant number, since it is smaller than the sum of its proper divisors (314959633413792).

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

190990820801568 is a wasteful number, since it uses less digits than its factorization.

190990820801568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252181009 (or 18252181001 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 66.

The spelling of 190990820801568 in words is "one hundred ninety trillion, nine hundred ninety billion, eight hundred twenty million, eight hundred one thousand, five hundred sixty-eight".