5261365998 has 48 divisors (see below), whose sum is σ = 13041321696. Its totient is φ = 1501727040.

The previous prime is 5261365987. The next prime is 5261365999. The reversal of 5261365998 is 8995631625.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5261365999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107028 + ... + 148248.

It is an arithmetic number, because the mean of its divisors is an integer number (271694202).

Almost surely, 2^5261365998 is an apocalyptic number.

5261365998 is an abundant number, since it is smaller than the sum of its proper divisors (7779955698).

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

5261365998 is a wasteful number, since it uses less digits than its factorization.

5261365998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42249 (or 42246 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 5261365998 is about 72535.2741636785. The cubic root of 5261365998 is about 1739.2666568811.

The spelling of 5261365998 in words is "five billion, two hundred sixty-one million, three hundred sixty-five thousand, nine hundred ninety-eight".