45591382920 has 128 divisors (see below), whose sum is σ = 145061072640. Its totient is φ = 11438423040.

The previous prime is 45591382861. The next prime is 45591382939. The reversal of 45591382920 is 2928319554.

It is a happy number.

45591382920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 45591382920.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32962 + ... + 303758.

It is an arithmetic number, because the mean of its divisors is an integer number (1133289630).

Almost surely, 2^45591382920 is an apocalyptic number.

45591382920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45591382920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72530536320).

45591382920 is an abundant number, since it is smaller than the sum of its proper divisors (99469689720).

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

45591382920 is a wasteful number, since it uses less digits than its factorization.

45591382920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270895 (or 270891 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 45591382920 in words is "forty-five billion, five hundred ninety-one million, three hundred eighty-two thousand, nine hundred twenty".