5550545405520 has 280 divisors, whose sum is σ = 19365137165736. Its totient is φ = 1478886211584.

The previous prime is 5550545405519. The next prime is 5550545405549. The reversal of 5550545405520 is 255045450555.

5550545405520 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 54 + 5 + 40 + 552 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1590413565456 + 3960131840064 = 1261116^2 + 1990008^2 .

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 55 ways as a sum of consecutive naturals, for example, 69535872 + ... + 69615648.

Almost surely, 2^{5550545405520} 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 5550545405520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9682568582868).

5550545405520 is an abundant number, since it is smaller than the sum of its proper divisors (13814591760216).

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

5550545405520 is a wasteful number, since it uses less digits than its factorization.

5550545405520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81001 (or 80980 counting only the distinct ones).

The product of its (nonzero) digits is 2500000, while the sum is 45.

The spelling of 5550545405520 in words is "five trillion, five hundred fifty billion, five hundred forty-five million, four hundred five thousand, five hundred twenty".