5556521028240 has 480 divisors, whose sum is σ = 23817589076736. Its totient is φ = 1172364503040.

The previous prime is 5556521028139. The next prime is 5556521028241. The reversal of 5556521028240 is 428201256555.

5556521028240 is a `hidden beast` number, since 5 + 5 + 5 + 6 + 521 + 0 + 2 + 82 + 40 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (5556521028241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 198550 + ... + 3339530.

Almost surely, 2^{5556521028240} 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 5556521028240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11908794538368).

5556521028240 is an abundant number, since it is smaller than the sum of its proper divisors (18261068048496).

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

5556521028240 is a wasteful number, since it uses less digits than its factorization.

5556521028240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141029 (or 3141011 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 45.

The spelling of 5556521028240 in words is "five trillion, five hundred fifty-six billion, five hundred twenty-one million, twenty-eight thousand, two hundred forty".