45171183277920 has 192 divisors, whose sum is σ = 162650704043520. Its totient is φ = 10322654957568.

The previous prime is 45171183277901. The next prime is 45171183277931. The reversal of 45171183277920 is 2977238117154.

It is a congruent number.

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, 14468019 + ... + 17310861.

It is an arithmetic number, because the mean of its divisors is an integer number (847139083560).

Almost surely, 2^{45171183277920} is an apocalyptic number.

45171183277920 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 45171183277920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81325352021760).

45171183277920 is an abundant number, since it is smaller than the sum of its proper divisors (117479520765600).

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

45171183277920 is a wasteful number, since it uses less digits than its factorization.

45171183277920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847597 (or 2847589 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 45171183277920 in words is "forty-five trillion, one hundred seventy-one billion, one hundred eighty-three million, two hundred seventy-seven thousand, nine hundred twenty".