5166655590 has 128 divisors (see below), whose sum is σ = 12992918400. Its totient is φ = 1313832960.

The previous prime is 5166655567. The next prime is 5166655597. The reversal of 5166655590 is 955566615.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166655597) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11932014 + ... + 11932446.

It is an arithmetic number, because the mean of its divisors is an integer number (101507175).

Almost surely, 2^5166655590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5166655590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6496459200).

5166655590 is an abundant number, since it is smaller than the sum of its proper divisors (7826262810).

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

5166655590 is a wasteful number, since it uses less digits than its factorization.

5166655590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682.

The product of its (nonzero) digits is 1215000, while the sum is 48.

The square root of 5166655590 is about 71879.4517925673. The cubic root of 5166655590 is about 1728.7671604606.

The spelling of 5166655590 in words is "five billion, one hundred sixty-six million, six hundred fifty-five thousand, five hundred ninety".