53321279945280 has 448 divisors, whose sum is σ = 180983977993728. Its totient is φ = 13270394142720.

The previous prime is 53321279945279. The next prime is 53321279945317. The reversal of 53321279945280 is 8254997212335.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 211687572 + ... + 211939308.

It is an arithmetic number, because the mean of its divisors is an integer number (403982093736).

Almost surely, 2^{53321279945280} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53321279945280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90491988996864).

53321279945280 is an abundant number, since it is smaller than the sum of its proper divisors (127662698048448).

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

53321279945280 is a wasteful number, since it uses less digits than its factorization.

53321279945280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252014 (or 252004 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 53321279945280 in words is "fifty-three trillion, three hundred twenty-one billion, two hundred seventy-nine million, nine hundred forty-five thousand, two hundred eighty".