255389239971 has 12 divisors (see below), whose sum is σ = 369858747648. Its totient is φ = 169814949264.

The previous prime is 255389239961. The next prime is 255389240009. The reversal of 255389239971 is 179932983552.

255389239971 is a `hidden beast` number, since 2 + 5 + 538 + 9 + 2 + 3 + 9 + 97 + 1 = 666.

It is not a de Polignac number, because 255389239971 - 2⁹ = 255389239459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255389239899 and 255389239908.

It is not an unprimeable number, because it can be changed into a prime (255389239961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37041700 + ... + 37048593.

It is an arithmetic number, because the mean of its divisors is an integer number (30821562304).

Almost surely, 2^255389239971 is an apocalyptic number.

255389239971 is a deficient number, since it is larger than the sum of its proper divisors (114469507677).

255389239971 is a wasteful number, since it uses less digits than its factorization.

255389239971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74090682 (or 74090679 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The spelling of 255389239971 in words is "two hundred fifty-five billion, three hundred eighty-nine million, two hundred thirty-nine thousand, nine hundred seventy-one".