5285718266761 has 9 divisors (see below), whose sum is σ = 5432523952149. Its totient is φ = 5142778249824.

The previous prime is 5285718266729. The next prime is 5285718266837. The reversal of 5285718266761 is 1676628175825.

The square root of 5285718266761 is 2299069.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2869869776761 + 2415848490000 = 1694069^2 + 1554300^2 .

It is not a de Polignac number, because 5285718266761 - 2⁵ = 5285718266729 is a prime.

It is a super-2 number, since 2×5285718266761² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5285718266693 and 5285718266702.

It is not an unprimeable number, because it can be changed into a prime (5285718266701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85034485 + ... + 85096621.

It is an arithmetic number, because the mean of its divisors is an integer number (603613772461).

Almost surely, 2^{5285718266761} is an apocalyptic number.

5285718266761 is the 2299069-th square number.

5285718266761 is the 1149535-th centered octagonal number.

It is an amenable number.

5285718266761 is a deficient number, since it is larger than the sum of its proper divisors (146805685388).

5285718266761 is an frugal number, since it uses more digits than its factorization.

5285718266761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124348 (or 62174 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 64.

Multiplying 5285718266761 by its sum of digits (64), we get a square (338285969072704 = 18392552²).

The spelling of 5285718266761 in words is "five trillion, two hundred eighty-five billion, seven hundred eighteen million, two hundred sixty-six thousand, seven hundred sixty-one".