258646952461 has 4 divisors (see below), whose sum is σ = 258655555900. Its totient is φ = 258638349024.

The previous prime is 258646952453. The next prime is 258646952467. The reversal of 258646952461 is 164259646852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123531160900 + 135115791561 = 351470^2 + 367581^2 .

It is a cyclic number.

It is not a de Polignac number, because 258646952461 - 2³ = 258646952453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258646952396 and 258646952405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258646952467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4256466 + ... + 4316803.

It is an arithmetic number, because the mean of its divisors is an integer number (64663888975).

Almost surely, 2^258646952461 is an apocalyptic number.

It is an amenable number.

258646952461 is a deficient number, since it is larger than the sum of its proper divisors (8603439).

258646952461 is an equidigital number, since it uses as much as digits as its factorization.

258646952461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603438.

The product of its digits is 24883200, while the sum is 58.

The spelling of 258646952461 in words is "two hundred fifty-eight billion, six hundred forty-six million, nine hundred fifty-two thousand, four hundred sixty-one".