45447807720 has 576 divisors, whose sum is σ = 174752424000. Its totient is φ = 9401204736.

The previous prime is 45447807661. The next prime is 45447807731. The reversal of 45447807720 is 2770874454.

It is a self number, because there is not a number n which added to its sum of digits gives 45447807720.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 59099496 + ... + 59100264.

It is an arithmetic number, because the mean of its divisors is an integer number (303389625).

Almost surely, 2^45447807720 is an apocalyptic number.

45447807720 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 45447807720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87376212000).

45447807720 is an abundant number, since it is smaller than the sum of its proper divisors (129304616280).

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

45447807720 is a wasteful number, since it uses less digits than its factorization.

45447807720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 48.

The spelling of 45447807720 in words is "forty-five billion, four hundred forty-seven million, eight hundred seven thousand, seven hundred twenty".