545671666269 has 12 divisors (see below), whose sum is σ = 792276307836. Its totient is φ = 361896233472.

The previous prime is 545671666229. The next prime is 545671666283. The reversal of 545671666269 is 962666176545.

It can be written as a sum of positive squares in 2 ways, for example, as 176578965369 + 369092700900 = 420213^2 + 607530^2 .

It is not a de Polignac number, because 545671666269 - 2⁸ = 545671666013 is a prime.

It is a super-2 number, since 2×545671666269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545671666229) 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, 157071282 + ... + 157074755.

It is an arithmetic number, because the mean of its divisors is an integer number (66023025653).

Almost surely, 2^545671666269 is an apocalyptic number.

It is an amenable number.

545671666269 is a deficient number, since it is larger than the sum of its proper divisors (246604641567).

545671666269 is a wasteful number, since it uses less digits than its factorization.

545671666269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314146236 (or 314146233 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 545671666269 in words is "five hundred forty-five billion, six hundred seventy-one million, six hundred sixty-six thousand, two hundred sixty-nine".