5261010018 has 64 divisors (see below), whose sum is σ = 12049938432. Its totient is φ = 1515726080.

The previous prime is 5261009993. The next prime is 5261010019. The reversal of 5261010018 is 8100101625.

It is a self number, because there is not a number n which added to its sum of digits gives 5261010018.

It is not an unprimeable number, because it can be changed into a prime (5261010019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243130 + ... + 263882.

It is an arithmetic number, because the mean of its divisors is an integer number (188280288).

Almost surely, 2^5261010018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5261010018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6024969216).

5261010018 is an abundant number, since it is smaller than the sum of its proper divisors (6788928414).

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

5261010018 is a wasteful number, since it uses less digits than its factorization.

5261010018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20959.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 5261010018 is about 72532.8202815801. The cubic root of 5261010018 is about 1739.2274301791.

The spelling of 5261010018 in words is "five billion, two hundred sixty-one million, ten thousand, eighteen".