255390628766 has 64 divisors (see below), whose sum is σ = 483399899136. Its totient is φ = 98485804800.

The previous prime is 255390628747. The next prime is 255390628783. The reversal of 255390628766 is 667826093552.

It is a super-2 number, since 2×255390628766² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9171821 + ... + 9199623.

It is an arithmetic number, because the mean of its divisors is an integer number (7553123424).

Almost surely, 2^255390628766 is an apocalyptic number.

255390628766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

255390628766 is a deficient number, since it is larger than the sum of its proper divisors (228009270370).

255390628766 is a wasteful number, since it uses less digits than its factorization.

255390628766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29097.

The product of its (nonzero) digits is 32659200, while the sum is 59.

The spelling of 255390628766 in words is "two hundred fifty-five billion, three hundred ninety million, six hundred twenty-eight thousand, seven hundred sixty-six".