255340779889 has 8 divisors (see below), whose sum is σ = 275040323712. Its totient is φ = 235649514000.

The previous prime is 255340779887. The next prime is 255340779931. The reversal of 255340779889 is 988977043552.

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

It is a cyclic number.

It is not a de Polignac number, because 255340779889 - 2¹ = 255340779887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255340779887) 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, 2005339 + ... + 2128864.

It is an arithmetic number, because the mean of its divisors is an integer number (34380040464).

Almost surely, 2^255340779889 is an apocalyptic number.

It is an amenable number.

255340779889 is a deficient number, since it is larger than the sum of its proper divisors (19699543823).

255340779889 is a wasteful number, since it uses less digits than its factorization.

255340779889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138967.

The product of its (nonzero) digits is 152409600, while the sum is 67.

The spelling of 255340779889 in words is "two hundred fifty-five billion, three hundred forty million, seven hundred seventy-nine thousand, eight hundred eighty-nine".