258252971640 has 64 divisors (see below), whose sum is σ = 774967802400. Its totient is φ = 68848891392.

The previous prime is 258252971611. The next prime is 258252971659. The reversal of 258252971640 is 46179252852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159706 + ... + 736214.

Almost surely, 2^258252971640 is an apocalyptic number.

258252971640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258252971640 is an abundant number, since it is smaller than the sum of its proper divisors (516714830760).

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

258252971640 is a wasteful number, since it uses less digits than its factorization.

258252971640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580256 (or 580252 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 258252971640 in words is "two hundred fifty-eight billion, two hundred fifty-two million, nine hundred seventy-one thousand, six hundred forty".