45459091440 has 720 divisors, whose sum is σ = 189703706400. Its totient is φ = 9698476032.

The previous prime is 45459091429. The next prime is 45459091453. The reversal of 45459091440 is 4419095454.

45459091440 is a `hidden beast` number, since 4 + 5 + 4 + 590 + 9 + 14 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 48932896 + ... + 48933824.

It is an arithmetic number, because the mean of its divisors is an integer number (263477370).

Almost surely, 2^45459091440 is an apocalyptic number.

45459091440 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 45459091440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94851853200).

45459091440 is an abundant number, since it is smaller than the sum of its proper divisors (144244614960).

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

45459091440 is a wasteful number, since it uses less digits than its factorization.

45459091440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 45459091440 in words is "forty-five billion, four hundred fifty-nine million, ninety-one thousand, four hundred forty".