554663664640 has 88 divisors (see below), whose sum is σ = 1331146937952. Its totient is φ = 221764730880.

The previous prime is 554663664631. The next prime is 554663664641. The reversal of 554663664640 is 46466366455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554663664641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11808882 + ... + 11855758.

Almost surely, 2^554663664640 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 554663664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665573468976).

554663664640 is an abundant number, since it is smaller than the sum of its proper divisors (776483273312).

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

554663664640 is a wasteful number, since it uses less digits than its factorization.

554663664640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49213 (or 49195 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 55.

The spelling of 554663664640 in words is "five hundred fifty-four billion, six hundred sixty-three million, six hundred sixty-four thousand, six hundred forty".