2192807990881 has 16 divisors (see below), whose sum is σ = 2246219352720. Its totient is φ = 2139871402240.

The previous prime is 2192807990839. The next prime is 2192807990887. The reversal of 2192807990881 is 1880997082912.

It can be written as a sum of positive squares in 8 ways, for example, as 979100355025 + 1213707635856 = 989495^2 + 1101684^2 .

It is a cyclic number.

It is not a de Polignac number, because 2192807990881 - 2³⁷ = 2055369037409 is a prime.

It is a super-2 number, since 2×2192807990881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2192807990887) 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, 7765551 + ... + 8042971.

It is an arithmetic number, because the mean of its divisors is an integer number (140388709545).

Almost surely, 2^{2192807990881} is an apocalyptic number.

It is an amenable number.

2192807990881 is a deficient number, since it is larger than the sum of its proper divisors (53411361839).

2192807990881 is a wasteful number, since it uses less digits than its factorization.

2192807990881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278276.

The product of its (nonzero) digits is 10450944, while the sum is 64.

The spelling of 2192807990881 in words is "two trillion, one hundred ninety-two billion, eight hundred seven million, nine hundred ninety thousand, eight hundred eighty-one".