5551236497664 has 864 divisors, whose sum is σ = 20076861063168. Its totient is φ = 1461274214400.

The previous prime is 5551236497659. The next prime is 5551236497683. The reversal of 5551236497664 is 4667946321555.

5551236497664 is a `hidden beast` number, since 5 + 5 + 51 + 2 + 36 + 497 + 6 + 64 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 677719809 + ... + 677727999.

It is an arithmetic number, because the mean of its divisors is an integer number (23237107712).

Almost surely, 2^{5551236497664} 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 5551236497664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10038430531584).

5551236497664 is an abundant number, since it is smaller than the sum of its proper divisors (14525624565504).

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

5551236497664 is a wasteful number, since it uses less digits than its factorization.

5551236497664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276 (or 8237 counting only the distinct ones).

The product of its digits is 163296000, while the sum is 63.

The spelling of 5551236497664 in words is "five trillion, five hundred fifty-one billion, two hundred thirty-six million, four hundred ninety-seven thousand, six hundred sixty-four".