5261771894 has 16 divisors (see below), whose sum is σ = 7944455376. Its totient is φ = 2613660000.

The previous prime is 5261771863. The next prime is 5261771909. The reversal of 5261771894 is 4981771625.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266669 + ... + 285719.

It is an arithmetic number, because the mean of its divisors is an integer number (496528461).

Almost surely, 2^5261771894 is an apocalyptic number.

5261771894 is a deficient number, since it is larger than the sum of its proper divisors (2682683482).

5261771894 is a wasteful number, since it uses less digits than its factorization.

5261771894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19951.

The product of its digits is 846720, while the sum is 50.

The square root of 5261771894 is about 72538.0720311755. The cubic root of 5261771894 is about 1739.3113818458.

The spelling of 5261771894 in words is "five billion, two hundred sixty-one million, seven hundred seventy-one thousand, eight hundred ninety-four".