259492012840 has 48 divisors (see below), whose sum is σ = 616203712980. Its totient is φ = 98333809920.

The previous prime is 259492012837. The next prime is 259492012877. The reversal of 259492012840 is 48210294952.

It can be written as a sum of positive squares in 2 ways, for example, as 255313941796 + 4178071044 = 505286^2 + 64638^2 .

It is a super-2 number, since 2×259492012840² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8970741 + ... + 8999620.

Almost surely, 2^259492012840 is an apocalyptic number.

259492012840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259492012840 is an abundant number, since it is smaller than the sum of its proper divisors (356711700140).

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

259492012840 is a wasteful number, since it uses less digits than its factorization.

259492012840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17970410 (or 17970387 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 259492012840 in words is "two hundred fifty-nine billion, four hundred ninety-two million, twelve thousand, eight hundred forty".