255678429888 has 168 divisors, whose sum is σ = 837967242528. Its totient is φ = 73014571008.

The previous prime is 255678429887. The next prime is 255678429901. The reversal of 255678429888 is 888924876552.

It is a happy number.

255678429888 is a `hidden beast` number, since 2 + 5 + 56 + 78 + 429 + 8 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (255678429887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8666170 + ... + 8695622.

Almost surely, 2^255678429888 is an apocalyptic number.

255678429888 is a gapful number since it is divisible by the number (28) 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 255678429888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418983621264).

255678429888 is an abundant number, since it is smaller than the sum of its proper divisors (582288812640).

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

255678429888 is a wasteful number, since it uses less digits than its factorization.

255678429888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31631 (or 31618 counting only the distinct ones).

The product of its digits is 619315200, while the sum is 72.

The spelling of 255678429888 in words is "two hundred fifty-five billion, six hundred seventy-eight million, four hundred twenty-nine thousand, eight hundred eighty-eight".