5261537663 has 8 divisors (see below), whose sum is σ = 5407419600. Its totient is φ = 5116724928.

The previous prime is 5261537641. The next prime is 5261537681. The reversal of 5261537663 is 3667351625.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5261537663 - 2¹⁸ = 5261275519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5261537683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257318 + ... + 277011.

It is an arithmetic number, because the mean of its divisors is an integer number (675927450).

Almost surely, 2^5261537663 is an apocalyptic number.

5261537663 is a deficient number, since it is larger than the sum of its proper divisors (145881937).

5261537663 is a wasteful number, since it uses less digits than its factorization.

5261537663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534601.

The product of its digits is 680400, while the sum is 44.

The square root of 5261537663 is about 72536.4574748450. The cubic root of 5261537663 is about 1739.2855726255.

The spelling of 5261537663 in words is "five billion, two hundred sixty-one million, five hundred thirty-seven thousand, six hundred sixty-three".