45881139891 has 8 divisors (see below), whose sum is σ = 61371558144. Its totient is φ = 30489074120.

The previous prime is 45881139883. The next prime is 45881139919. The reversal of 45881139891 is 19893118854.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45881139891 - 2³ = 45881139883 is a prime.

It is a super-2 number, since 2×45881139891² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45881139881) 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, 24587031 + ... + 24588896.

It is an arithmetic number, because the mean of its divisors is an integer number (7671444768).

Almost surely, 2^45881139891 is an apocalyptic number.

45881139891 is a deficient number, since it is larger than the sum of its proper divisors (15490418253).

45881139891 is a wasteful number, since it uses less digits than its factorization.

45881139891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49176241.

The product of its digits is 2488320, while the sum is 57.

The spelling of 45881139891 in words is "forty-five billion, eight hundred eighty-one million, one hundred thirty-nine thousand, eight hundred ninety-one".