255417647620 has 48 divisors (see below), whose sum is σ = 543900188160. Its totient is φ = 100737576576.

The previous prime is 255417647593. The next prime is 255417647621. The reversal of 255417647620 is 26746714552.

It is not an unprimeable number, because it can be changed into a prime (255417647621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065154 + ... + 1282726.

It is an arithmetic number, because the mean of its divisors is an integer number (11331253920).

Almost surely, 2^255417647620 is an apocalyptic number.

255417647620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255417647620 is an abundant number, since it is smaller than the sum of its proper divisors (288482540540).

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

255417647620 is a wasteful number, since it uses less digits than its factorization.

255417647620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218404 (or 218402 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 255417647620 in words is "two hundred fifty-five billion, four hundred seventeen million, six hundred forty-seven thousand, six hundred twenty".