45505420000000 has 144 divisors (see below), whose sum is σ = 113541114802752. Its totient is φ = 18202160000000.

The previous prime is 45505419999973. The next prime is 45505420000009. The reversal of 45505420000000 is 2450554.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 45505420000000.

It is not an unprimeable number, because it can be changed into a prime (45505420000009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18862365 + ... + 21137635.

It is an arithmetic number, because the mean of its divisors is an integer number (788479963908).

Almost surely, 2^{45505420000000} is an apocalyptic number.

45505420000000 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 45505420000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56770557401376).

45505420000000 is an abundant number, since it is smaller than the sum of its proper divisors (68035694802752).

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

45505420000000 is an frugal number, since it uses more digits than its factorization.

45505420000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275322 (or 2275278 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

Adding to 45505420000000 its reverse (2450554), we get a palindrome (45505422450554).

The spelling of 45505420000000 in words is "forty-five trillion, five hundred five billion, four hundred twenty million", and thus it is an aban number.