545365642761 has 12 divisors (see below), whose sum is σ = 788460712260. Its totient is φ = 363249246240.

The previous prime is 545365642747. The next prime is 545365642807. The reversal of 545365642761 is 167246563545.

545365642761 is a `hidden beast` number, since 5 + 4 + 5 + 3 + 6 + 564 + 2 + 76 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155034337536 + 390331305225 = 393744^2 + 624765^2 .

It is a de Polignac number, because none of the positive numbers 2^k-545365642761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545365642698 and 545365642707.

It is not an unprimeable number, because it can be changed into a prime (545365642721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27310210 + ... + 27330171.

It is an arithmetic number, because the mean of its divisors is an integer number (65705059355).

Almost surely, 2^545365642761 is an apocalyptic number.

It is an amenable number.

545365642761 is a deficient number, since it is larger than the sum of its proper divisors (243095069499).

545365642761 is a wasteful number, since it uses less digits than its factorization.

545365642761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54641496 (or 54641493 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 54.

The spelling of 545365642761 in words is "five hundred forty-five billion, three hundred sixty-five million, six hundred forty-two thousand, seven hundred sixty-one".