45730191920 has 40 divisors (see below), whose sum is σ = 121511654304. Its totient is φ = 15678922752.

The previous prime is 45730191917. The next prime is 45730191961. The reversal of 45730191920 is 2919103754.

45730191920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40829969 + ... + 40831088.

Almost surely, 2^45730191920 is an apocalyptic number.

45730191920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45730191920 is an abundant number, since it is smaller than the sum of its proper divisors (75781462384).

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

45730191920 is a wasteful number, since it uses less digits than its factorization.

45730191920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81661077 (or 81661071 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 45730191920 in words is "forty-five billion, seven hundred thirty million, one hundred ninety-one thousand, nine hundred twenty".