255390242816 has 24 divisors (see below), whose sum is σ = 510655787460. Its totient is φ = 127695120384.

The previous prime is 255390242801. The next prime is 255390242819. The reversal of 255390242816 is 618242093552.

It is a super-2 number, since 2×255390242816² (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 (255390242819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62349086 + ... + 62353181.

Almost surely, 2^255390242816 is an apocalyptic number.

It is an amenable number.

255390242816 is a deficient number, since it is larger than the sum of its proper divisors (255265544644).

255390242816 is an equidigital number, since it uses as much as digits as its factorization.

255390242816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124702289 (or 124702269 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 255390242816 in words is "two hundred fifty-five billion, three hundred ninety million, two hundred forty-two thousand, eight hundred sixteen".