255451431213 has 30 divisors (see below), whose sum is σ = 419444958702. Its totient is φ = 154819043280.

The previous prime is 255451431203. The next prime is 255451431229. The reversal of 255451431213 is 312134154552.

255451431213 is a `hidden beast` number, since 2 + 5 + 5 + 4 + 5 + 1 + 431 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 252729409284 + 2722021929 = 502722^2 + 52173^2 .

It is a de Polignac number, because none of the positive numbers 2^k-255451431213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255451431203) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 13022106 + ... + 13041707.

Almost surely, 2^255451431213 is an apocalyptic number.

It is an amenable number.

255451431213 is a deficient number, since it is larger than the sum of its proper divisors (163993527489).

255451431213 is a wasteful number, since it uses less digits than its factorization.

255451431213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26063847 (or 26063827 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 255451431213 its reverse (312134154552), we get a palindrome (567585585765).

The spelling of 255451431213 in words is "two hundred fifty-five billion, four hundred fifty-one million, four hundred thirty-one thousand, two hundred thirteen".