255911036500 has 384 divisors, whose sum is σ = 687651793920. Its totient is φ = 81333504000.

The previous prime is 255911036497. The next prime is 255911036533. The reversal of 255911036500 is 5630119552.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 255911036500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 311706090 + ... + 311706910.

It is an arithmetic number, because the mean of its divisors is an integer number (1790759880).

Almost surely, 2^255911036500 is an apocalyptic number.

255911036500 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 255911036500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343825896960).

255911036500 is an abundant number, since it is smaller than the sum of its proper divisors (431740757420).

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

255911036500 is a wasteful number, since it uses less digits than its factorization.

255911036500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 255911036500 in words is "two hundred fifty-five billion, nine hundred eleven million, thirty-six thousand, five hundred".