5151660660 has 144 divisors (see below), whose sum is σ = 16047354960. Its totient is φ = 1336965120.

The previous prime is 5151660629. The next prime is 5151660667. The reversal of 5151660660 is 660661515.

It can be written as a sum of positive squares in 8 ways, for example, as 1228642704 + 3923017956 = 35052^2 + 62634^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5151660667) 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 47 ways as a sum of consecutive naturals, for example, 4818606 + ... + 4819674.

It is an arithmetic number, because the mean of its divisors is an integer number (111439965).

Almost surely, 2^5151660660 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 5151660660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8023677480).

5151660660 is an abundant number, since it is smaller than the sum of its proper divisors (10895694300).

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

5151660660 is a wasteful number, since it uses less digits than its factorization.

5151660660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 5151660660 is about 71775.0699059221. The cubic root of 5151660660 is about 1727.0931013122.

The spelling of 5151660660 in words is "five billion, one hundred fifty-one million, six hundred sixty thousand, six hundred sixty".