255720703760 has 80 divisors (see below), whose sum is σ = 618210289152. Its totient is φ = 98265984000.

The previous prime is 255720703759. The next prime is 255720703769. The reversal of 255720703760 is 67307027552.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (255720703769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36566 + ... + 716085.

Almost surely, 2^255720703760 is an apocalyptic number.

255720703760 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 255720703760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309105144576).

255720703760 is an abundant number, since it is smaller than the sum of its proper divisors (362489585392).

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

255720703760 is a wasteful number, since it uses less digits than its factorization.

255720703760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752832 (or 752826 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 44.

The spelling of 255720703760 in words is "two hundred fifty-five billion, seven hundred twenty million, seven hundred three thousand, seven hundred sixty".