259394742740 has 144 divisors (see below), whose sum is σ = 640083052224. Its totient is φ = 88037913600.

The previous prime is 259394742731. The next prime is 259394742749. The reversal of 259394742740 is 47247493952.

It is an interprime number because it is at equal distance from previous prime (259394742731) and next prime (259394742749).

It is a super-2 number, since 2×259394742740² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259394742749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56870060 + ... + 56874620.

It is an arithmetic number, because the mean of its divisors is an integer number (4445021196).

Almost surely, 2^259394742740 is an apocalyptic number.

259394742740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259394742740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320041526112).

259394742740 is an abundant number, since it is smaller than the sum of its proper divisors (380688309484).

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

259394742740 is a wasteful number, since it uses less digits than its factorization.

259394742740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158 (or 5149 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 259394742740 in words is "two hundred fifty-nine billion, three hundred ninety-four million, seven hundred forty-two thousand, seven hundred forty".