515577133369 has 9 divisors (see below), whose sum is σ = 538985421093. Its totient is φ = 493144939452.

The previous prime is 515577133349. The next prime is 515577133427. The reversal of 515577133369 is 963331775515.

It is a happy number.

The square root of 515577133369 is 718037.

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

It is not a de Polignac number, because 515577133369 - 2¹⁵ = 515577100601 is a prime.

It is a super-2 number, since 2×515577133369² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515577133319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16499242 + ... + 16530460.

Almost surely, 2^515577133369 is an apocalyptic number.

515577133369 is the 718037-th square number.

515577133369 is the 359019-th centered octagonal number.

It is an amenable number.

515577133369 is a deficient number, since it is larger than the sum of its proper divisors (23408287724).

515577133369 is an frugal number, since it uses more digits than its factorization.

515577133369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62484 (or 31242 counting only the distinct ones).

The product of its digits is 8930250, while the sum is 55.

The spelling of 515577133369 in words is "five hundred fifteen billion, five hundred seventy-seven million, one hundred thirty-three thousand, three hundred sixty-nine".