45169850881 has 4 divisors (see below), whose sum is σ = 45170692164. Its totient is φ = 45169009600.

The previous prime is 45169850863. The next prime is 45169850909. The reversal of 45169850881 is 18805896154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6816153600 + 38353697281 = 82560^2 + 195841^2 .

It is a cyclic number.

It is not a de Polignac number, because 45169850881 - 2²⁵ = 45136296449 is a prime.

It is a super-2 number, since 2×45169850881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45169856881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334180 + ... + 449461.

It is an arithmetic number, because the mean of its divisors is an integer number (11292673041).

Almost surely, 2^45169850881 is an apocalyptic number.

It is an amenable number.

45169850881 is a deficient number, since it is larger than the sum of its proper divisors (841283).

45169850881 is an equidigital number, since it uses as much as digits as its factorization.

45169850881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841282.

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 45169850881 in words is "forty-five billion, one hundred sixty-nine million, eight hundred fifty thousand, eight hundred eighty-one".