255029821776 has 120 divisors (see below), whose sum is σ = 719867616000. Its totient is φ = 84281976576.

The previous prime is 255029821747. The next prime is 255029821777. The reversal of 255029821776 is 677128920552.

255029821776 is a `hidden beast` number, since 2 + 550 + 2 + 9 + 8 + 2 + 17 + 76 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255029821777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7865085 + ... + 7897443.

It is an arithmetic number, because the mean of its divisors is an integer number (5998896800).

Almost surely, 2^255029821776 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 255029821776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359933808000).

255029821776 is an abundant number, since it is smaller than the sum of its proper divisors (464837794224).

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

255029821776 is a wasteful number, since it uses less digits than its factorization.

255029821776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32841 (or 32832 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 255029821776 in words is "two hundred fifty-five billion, twenty-nine million, eight hundred twenty-one thousand, seven hundred seventy-six".