255140278815 has 48 divisors (see below), whose sum is σ = 433793210400. Its totient is φ = 128028180480.

The previous prime is 255140278801. The next prime is 255140278819. The reversal of 255140278815 is 518872041552.

It is not a de Polignac number, because 255140278815 - 2¹¹ = 255140276767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255140278819) 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 47 ways as a sum of consecutive naturals, for example, 16296111 + ... + 16311759.

It is an arithmetic number, because the mean of its divisors is an integer number (9037358550).

Almost surely, 2^255140278815 is an apocalyptic number.

255140278815 is a deficient number, since it is larger than the sum of its proper divisors (178652931585).

255140278815 is a wasteful number, since it uses less digits than its factorization.

255140278815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19452 (or 19435 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 48.

The spelling of 255140278815 in words is "two hundred fifty-five billion, one hundred forty million, two hundred seventy-eight thousand, eight hundred fifteen".