21258714151 has 12 divisors (see below), whose sum is σ = 21668342152. Its totient is φ = 20856651984.

The previous prime is 21258714133. The next prime is 21258714181. The reversal of 21258714151 is 15141785212.

It is not a de Polignac number, because 21258714151 - 2⁵ = 21258714119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21258714151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21258714181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1814725 + ... + 1826401.

Almost surely, 2^21258714151 is an apocalyptic number.

21258714151 is a deficient number, since it is larger than the sum of its proper divisors (409628001).

21258714151 is an equidigital number, since it uses as much as digits as its factorization.

21258714151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318 (or 12259 counting only the distinct ones).

The product of its digits is 22400, while the sum is 37.

The spelling of 21258714151 in words is "twenty-one billion, two hundred fifty-eight million, seven hundred fourteen thousand, one hundred fifty-one".