56356265140561 has 27 divisors (see below), whose sum is σ = 60227074294779. Its totient is φ = 52723491052608.

The previous prime is 56356265140541. The next prime is 56356265140577. The reversal of 56356265140561 is 16504156265365.

The square root of 56356265140561 is 7507081.

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., 43875984971025 + 12480280169536 = 6623895^2 + 3532744^2 .

It is not a de Polignac number, because 56356265140561 - 2⁵ = 56356265140529 is a prime.

It is a super-3 number, since 3×56356265140561³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56356265140541) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22844046250 + ... + 22844048716.

Almost surely, 2^{56356265140561} is an apocalyptic number.

56356265140561 is the 7507081-st square number.

56356265140561 is the 3753541-st centered octagonal number.

It is an amenable number.

56356265140561 is a deficient number, since it is larger than the sum of its proper divisors (3870809154218).

56356265140561 is an frugal number, since it uses more digits than its factorization.

56356265140561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326 (or 2663 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 55.

The spelling of 56356265140561 in words is "fifty-six trillion, three hundred fifty-six billion, two hundred sixty-five million, one hundred forty thousand, five hundred sixty-one".