45385731666 has 48 divisors (see below), whose sum is σ = 107303889888. Its totient is φ = 13749595200.

The previous prime is 45385731637. The next prime is 45385731679. The reversal of 45385731666 is 66613758354.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 768886 + ... + 825806.

It is an arithmetic number, because the mean of its divisors is an integer number (2235497706).

Almost surely, 2^45385731666 is an apocalyptic number.

45385731666 is an abundant number, since it is smaller than the sum of its proper divisors (61918158222).

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

45385731666 is a wasteful number, since it uses less digits than its factorization.

45385731666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60967 (or 60964 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 45385731666 in words is "forty-five billion, three hundred eighty-five million, seven hundred thirty-one thousand, six hundred sixty-six".