52378272769 has 9 divisors (see below), whose sum is σ = 53067999747. Its totient is φ = 51697405344.

The previous prime is 52378272763. The next prime is 52378272823. The reversal of 52378272769 is 96727287325.

The square root of 52378272769 is 228863.

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

It can be written as a sum of positive squares in only one way, i.e., 5932850625 + 46445422144 = 77025^2 + 215512^2 .

It is not a de Polignac number, because 52378272769 - 2²⁷ = 52244055041 is a prime.

It is a super-2 number, since 2×52378272769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52378272763) 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, 18078729 + ... + 18081625.

Almost surely, 2^52378272769 is an apocalyptic number.

52378272769 is the 228863-rd square number.

52378272769 is the 114432-nd centered octagonal number.

It is an amenable number.

52378272769 is a deficient number, since it is larger than the sum of its proper divisors (689726978).

52378272769 is an frugal number, since it uses more digits than its factorization.

52378272769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952 (or 2976 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 58.

The spelling of 52378272769 in words is "fifty-two billion, three hundred seventy-eight million, two hundred seventy-two thousand, seven hundred sixty-nine".