45511405520 has 80 divisors (see below), whose sum is σ = 121126592640. Its totient is φ = 15578583552.

The previous prime is 45511405507. The next prime is 45511405547. The reversal of 45511405520 is 2550411554.

45511405520 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 (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280994 + ... + 412286.

It is an arithmetic number, because the mean of its divisors is an integer number (1514082408).

Almost surely, 2^45511405520 is an apocalyptic number.

45511405520 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 45511405520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60563296320).

45511405520 is an abundant number, since it is smaller than the sum of its proper divisors (75615187120).

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

45511405520 is a wasteful number, since it uses less digits than its factorization.

45511405520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131932 (or 131926 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 45511405520 in words is "forty-five billion, five hundred eleven million, four hundred five thousand, five hundred twenty".