5555038566 has 192 divisors, whose sum is σ = 14839407360. Its totient is φ = 1368864000.

The previous prime is 5555038543. The next prime is 5555038571. The reversal of 5555038566 is 6658305555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5720461 + ... + 5721431.

It is an arithmetic number, because the mean of its divisors is an integer number (77288580).

Almost surely, 2^5555038566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5555038566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7419703680).

5555038566 is an abundant number, since it is smaller than the sum of its proper divisors (9284368794).

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

5555038566 is a wasteful number, since it uses less digits than its factorization.

5555038566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The square root of 5555038566 is about 74532.1310979365. The cubic root of 5555038566 is about 1771.0426752620.

The spelling of 5555038566 in words is "five billion, five hundred fifty-five million, thirty-eight thousand, five hundred sixty-six".