5551905399552 has 216 divisors, whose sum is σ = 16238896192064. Its totient is φ = 1823922634752.

The previous prime is 5551905399539. The next prime is 5551905399559. The reversal of 5551905399552 is 2559935091555.

5551905399552 is a `hidden beast` number, since 5 + 5 + 5 + 1 + 9 + 0 + 539 + 95 + 5 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5551905399552.

It is not an unprimeable number, because it can be changed into a prime (5551905399559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239325618 + ... + 239348814.

Almost surely, 2^{5551905399552} 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 5551905399552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8119448096032).

5551905399552 is an abundant number, since it is smaller than the sum of its proper divisors (10686990792512).

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

5551905399552 is a wasteful number, since it uses less digits than its factorization.

5551905399552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24715 (or 24698 counting only the distinct ones).

The product of its (nonzero) digits is 68343750, while the sum is 63.

The spelling of 5551905399552 in words is "five trillion, five hundred fifty-one billion, nine hundred five million, three hundred ninety-nine thousand, five hundred fifty-two".