5265976781 has 16 divisors (see below), whose sum is σ = 5707739520. Its totient is φ = 4829563200.

The previous prime is 5265976741. The next prime is 5265976813. The reversal of 5265976781 is 1876795625.

5265976781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5265976781 is a prime.

It is a super-2 number, since 2×5265976781² = 55461022916062243922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5265976741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1365506 + ... + 1369356.

It is an arithmetic number, because the mean of its divisors is an integer number (356733720).

Almost surely, 2^5265976781 is an apocalyptic number.

It is an amenable number.

5265976781 is a deficient number, since it is larger than the sum of its proper divisors (441762739).

5265976781 is a wasteful number, since it uses less digits than its factorization.

5265976781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516.

The product of its digits is 6350400, while the sum is 56.

The square root of 5265976781 is about 72567.0502432061. The cubic root of 5265976781 is about 1739.7745756541.

The spelling of 5265976781 in words is "five billion, two hundred sixty-five million, nine hundred seventy-six thousand, seven hundred eighty-one".