255415142808 has 160 divisors (see below), whose sum is σ = 819796121760. Its totient is φ = 72779627520.

The previous prime is 255415142747. The next prime is 255415142809. The reversal of 255415142808 is 808241514552.

255415142808 is a `hidden beast` number, since 2 + 5 + 54 + 1 + 514 + 2 + 80 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255415142809) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1616448 + ... + 1767408.

It is an arithmetic number, because the mean of its divisors is an integer number (5123725761).

Almost surely, 2^255415142808 is an apocalyptic number.

255415142808 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 255415142808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409898060880).

255415142808 is an abundant number, since it is smaller than the sum of its proper divisors (564380978952).

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

255415142808 is a wasteful number, since it uses less digits than its factorization.

255415142808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151359 (or 151346 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 45.

The spelling of 255415142808 in words is "two hundred fifty-five billion, four hundred fifteen million, one hundred forty-two thousand, eight hundred eight".