21284153351 has 2 divisors, whose sum is σ = 21284153352. Its totient is φ = 21284153350.

The previous prime is 21284153279. The next prime is 21284153353. The reversal of 21284153351 is 15335148212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21284153351 - 2²² = 21279959047 is a prime.

Together with 21284153353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21284153353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10642076675 + 10642076676.

It is an arithmetic number, because the mean of its divisors is an integer number (10642076676).

Almost surely, 2^21284153351 is an apocalyptic number.

21284153351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21284153351 is an equidigital number, since it uses as much as digits as its factorization.

21284153351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The spelling of 21284153351 in words is "twenty-one billion, two hundred eighty-four million, one hundred fifty-three thousand, three hundred fifty-one".