255500807639 has 8 divisors (see below), whose sum is σ = 318546461568. Its totient is φ = 199091538360.

The previous prime is 255500807623. The next prime is 255500807669. The reversal of 255500807639 is 936708005552.

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

It is not a de Polignac number, because 255500807639 - 2⁴ = 255500807623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255500807609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659096077 + ... + 1659096230.

It is an arithmetic number, because the mean of its divisors is an integer number (39818307696).

Almost surely, 2^255500807639 is an apocalyptic number.

255500807639 is a deficient number, since it is larger than the sum of its proper divisors (63045653929).

255500807639 is a wasteful number, since it uses less digits than its factorization.

255500807639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318192325.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The spelling of 255500807639 in words is "two hundred fifty-five billion, five hundred million, eight hundred seven thousand, six hundred thirty-nine".