5451555113280 has 448 divisors, whose sum is σ = 20245720158720. Its totient is φ = 1378230239232.

The previous prime is 5451555113243. The next prime is 5451555113297. The reversal of 5451555113280 is 823115551545.

5451555113280 is a `hidden beast` number, since 5 + 4 + 5 + 1 + 5 + 551 + 13 + 2 + 80 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 22333974 + ... + 22576746.

It is an arithmetic number, because the mean of its divisors is an integer number (45191339640).

Almost surely, 2^{5451555113280} 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 5451555113280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10122860079360).

5451555113280 is an abundant number, since it is smaller than the sum of its proper divisors (14794165045440).

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

5451555113280 is a wasteful number, since it uses less digits than its factorization.

5451555113280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242935 (or 242919 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 45.

The spelling of 5451555113280 in words is "five trillion, four hundred fifty-one billion, five hundred fifty-five million, one hundred thirteen thousand, two hundred eighty".