259871715860 has 12 divisors (see below), whose sum is σ = 545730603348. Its totient is φ = 103948686336.

The previous prime is 259871715811. The next prime is 259871715869. The reversal of 259871715860 is 68517178952.

It can be written as a sum of positive squares in 2 ways, for example, as 42549788176 + 217321927684 = 206276^2 + 466178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 259871715860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259871715869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6496792877 + ... + 6496792916.

It is an arithmetic number, because the mean of its divisors is an integer number (45477550279).

Almost surely, 2^259871715860 is an apocalyptic number.

259871715860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259871715860 is an abundant number, since it is smaller than the sum of its proper divisors (285858887488).

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

259871715860 is a wasteful number, since it uses less digits than its factorization.

259871715860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12993585802 (or 12993585800 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 59.

The spelling of 259871715860 in words is "two hundred fifty-nine billion, eight hundred seventy-one million, seven hundred fifteen thousand, eight hundred sixty".