255553191936 has 540 divisors, whose sum is σ = 869139301212. Its totient is φ = 72137834496.

The previous prime is 255553191919. The next prime is 255553191983. The reversal of 255553191936 is 639191355552.

255553191936 is a `hidden beast` number, since 2 + 55 + 553 + 1 + 9 + 1 + 9 + 36 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2890137600 + 252663054336 = 53760^2 + 502656^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 816463716 + ... + 816464028.

Almost surely, 2^255553191936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255553191936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434569650606).

255553191936 is an abundant number, since it is smaller than the sum of its proper divisors (613586109276).

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

255553191936 is a wasteful number, since it uses less digits than its factorization.

255553191936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 438 counting only the distinct ones).

The product of its digits is 5467500, while the sum is 54.

The spelling of 255553191936 in words is "two hundred fifty-five billion, five hundred fifty-three million, one hundred ninety-one thousand, nine hundred thirty-six".