259742597868 has 72 divisors (see below), whose sum is σ = 707952117600. Its totient is φ = 79821893376.

The previous prime is 259742597857. The next prime is 259742597897. The reversal of 259742597868 is 868795247952.

259742597868 is a `hidden beast` number, since 2 + 59 + 7 + 425 + 97 + 8 + 68 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 259742597796 and 259742597805.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35593 + ... + 721631.

It is an arithmetic number, because the mean of its divisors is an integer number (9832668300).

Almost surely, 2^259742597868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259742597868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353976058800).

259742597868 is an abundant number, since it is smaller than the sum of its proper divisors (448209519732).

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

259742597868 is a wasteful number, since it uses less digits than its factorization.

259742597868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686871 (or 686866 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 72.

The spelling of 259742597868 in words is "two hundred fifty-nine billion, seven hundred forty-two million, five hundred ninety-seven thousand, eight hundred sixty-eight".