255551436000 has 1728 divisors, whose sum is σ = 1139499518976. Its totient is φ = 55085184000.

The previous prime is 255551435981. The next prime is 255551436031. The reversal of 255551436000 is 634155552.

255551436000 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 5 + 1 + 43 + 600 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3599315965 + ... + 3599316035.

It is an arithmetic number, because the mean of its divisors is an integer number (659432592).

Almost surely, 2^255551436000 is an apocalyptic number.

255551436000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255551436000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569749759488).

255551436000 is an abundant number, since it is smaller than the sum of its proper divisors (883948082976).

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

255551436000 is an equidigital number, since it uses as much as digits as its factorization.

255551436000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 255551436000 in words is "two hundred fifty-five billion, five hundred fifty-one million, four hundred thirty-six thousand".