5561250512664 has 256 divisors, whose sum is σ = 17685914803200. Its totient is φ = 1415430144000.

The previous prime is 5561250512659. The next prime is 5561250512677. The reversal of 5561250512664 is 4662150521655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17951272 + ... + 18258440.

It is an arithmetic number, because the mean of its divisors is an integer number (69085604700).

Almost surely, 2^{5561250512664} 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 5561250512664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8842957401600).

5561250512664 is an abundant number, since it is smaller than the sum of its proper divisors (12124664290536).

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

5561250512664 is a wasteful number, since it uses less digits than its factorization.

5561250512664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307394 (or 307390 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 5561250512664 in words is "five trillion, five hundred sixty-one billion, two hundred fifty million, five hundred twelve thousand, six hundred sixty-four".