255648393926 has 32 divisors (see below), whose sum is σ = 404605393920. Its totient is φ = 120907204704.

The previous prime is 255648393919. The next prime is 255648393943. The reversal of 255648393926 is 629393846552.

It is a super-2 number, since 2×255648393926² (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 15 ways as a sum of consecutive naturals, for example, 3321191 + ... + 3397293.

It is an arithmetic number, because the mean of its divisors is an integer number (12643918560).

Almost surely, 2^255648393926 is an apocalyptic number.

255648393926 is a deficient number, since it is larger than the sum of its proper divisors (148956999994).

255648393926 is a wasteful number, since it uses less digits than its factorization.

255648393926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76940.

The product of its digits is 83980800, while the sum is 62.

The spelling of 255648393926 in words is "two hundred fifty-five billion, six hundred forty-eight million, three hundred ninety-three thousand, nine hundred twenty-six".