255740761278 has 24 divisors (see below), whose sum is σ = 554352770088. Its totient is φ = 85208799312.

The previous prime is 255740761249. The next prime is 255740761303. The reversal of 255740761278 is 872167047552.

255740761278 is a `hidden beast` number, since 2 + 5 + 574 + 0 + 7 + 61 + 2 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3135376 + ... + 3215907.

It is an arithmetic number, because the mean of its divisors is an integer number (23098032087).

Almost surely, 2^255740761278 is an apocalyptic number.

255740761278 is an abundant number, since it is smaller than the sum of its proper divisors (298612008810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255740761278 is a wasteful number, since it uses less digits than its factorization.

255740761278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6353528 (or 6353525 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 255740761278 in words is "two hundred fifty-five billion, seven hundred forty million, seven hundred sixty-one thousand, two hundred seventy-eight".