255415643502 has 8 divisors (see below), whose sum is σ = 510831287016. Its totient is φ = 85138547832.

The previous prime is 255415643501. The next prime is 255415643521. The reversal of 255415643502 is 205346514552.

It is a sphenic number, since it is the product of 3 distinct primes.

255415643502 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255415643501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21284636953 + ... + 21284636964.

It is an arithmetic number, because the mean of its divisors is an integer number (63853910877).

Almost surely, 2^255415643502 is an apocalyptic number.

255415643502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255415643502 is a wasteful number, since it uses less digits than its factorization.

255415643502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42569273922.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 255415643502 in words is "two hundred fifty-five billion, four hundred fifteen million, six hundred forty-three thousand, five hundred two".