55840412873280 has 672 divisors, whose sum is σ = 209744356573440. Its totient is φ = 12546845982720.

The previous prime is 55840412873279. The next prime is 55840412873293. The reversal of 55840412873280 is 8237821404855.

It is a tau number, because it is divible by the number of its divisors (672).

It is a self number, because there is not a number n which added to its sum of digits gives 55840412873280.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5890955581 + ... + 5890965059.

Almost surely, 2^{55840412873280} 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 55840412873280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104872178286720).

55840412873280 is an abundant number, since it is smaller than the sum of its proper divisors (153903943700160).

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

55840412873280 is a wasteful number, since it uses less digits than its factorization.

55840412873280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627 (or 11610 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 55840412873280 in words is "fifty-five trillion, eight hundred forty billion, four hundred twelve million, eight hundred seventy-three thousand, two hundred eighty".