45581668893 has 20 divisors (see below), whose sum is σ = 71051622048. Its totient is φ = 29066570280.

The previous prime is 45581668859. The next prime is 45581668903. The reversal of 45581668893 is 39886618554.

45581668893 is a `hidden beast` number, since 4 + 558 + 16 + 68 + 8 + 9 + 3 = 666.

It is not a de Polignac number, because 45581668893 - 2⁹ = 45581668381 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45581668893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45581668813) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12231543 + ... + 12235268.

Almost surely, 2^45581668893 is an apocalyptic number.

It is an amenable number.

45581668893 is a deficient number, since it is larger than the sum of its proper divisors (25469953155).

45581668893 is a wasteful number, since it uses less digits than its factorization.

45581668893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24466846 (or 24466837 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The spelling of 45581668893 in words is "forty-five billion, five hundred eighty-one million, six hundred sixty-eight thousand, eight hundred ninety-three".