255053364021 has 24 divisors (see below), whose sum is σ = 369837771576. Its totient is φ = 169377333120.

The previous prime is 255053364017. The next prime is 255053364047. The reversal of 255053364021 is 120463350552.

255053364021 is a `hidden beast` number, since 2 + 5 + 5 + 0 + 5 + 3 + 3 + 640 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17791824996 + 237261539025 = 133386^2 + 487095^2 .

It is not a de Polignac number, because 255053364021 - 2² = 255053364017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255053364061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6025551 + ... + 6067731.

It is an arithmetic number, because the mean of its divisors is an integer number (15409907149).

Almost surely, 2^255053364021 is an apocalyptic number.

It is an amenable number.

255053364021 is a deficient number, since it is larger than the sum of its proper divisors (114784407555).

255053364021 is a wasteful number, since it uses less digits than its factorization.

255053364021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44773 (or 44770 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 255053364021 in words is "two hundred fifty-five billion, fifty-three million, three hundred sixty-four thousand, twenty-one".