258946649851 has 8 divisors (see below), whose sum is σ = 259399771904. Its totient is φ = 258493795560.

The previous prime is 258946649831. The next prime is 258946649879. The reversal of 258946649851 is 158946649852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258946649851 - 2²³ = 258938261243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258946649831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1920226 + ... + 2050648.

It is an arithmetic number, because the mean of its divisors is an integer number (32424971488).

Almost surely, 2^258946649851 is an apocalyptic number.

258946649851 is a deficient number, since it is larger than the sum of its proper divisors (453122053).

258946649851 is a wasteful number, since it uses less digits than its factorization.

258946649851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133881.

The product of its digits is 149299200, while the sum is 67.

Subtracting from 258946649851 its reverse (158946649852), we obtain a palindrome (99999999999).

The spelling of 258946649851 in words is "two hundred fifty-eight billion, nine hundred forty-six million, six hundred forty-nine thousand, eight hundred fifty-one".