21458263363 has 2 divisors, whose sum is σ = 21458263364. Its totient is φ = 21458263362.

The previous prime is 21458263313. The next prime is 21458263427. The reversal of 21458263363 is 36336285412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21458263363 - 2¹³ = 21458255171 is a prime.

It is not a weakly prime, because it can be changed into another prime (21458263303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10729131681 + 10729131682.

It is an arithmetic number, because the mean of its divisors is an integer number (10729131682).

Almost surely, 2^21458263363 is an apocalyptic number.

21458263363 is a deficient number, since it is larger than the sum of its proper divisors (1).

21458263363 is an equidigital number, since it uses as much as digits as its factorization.

21458263363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 43.

The spelling of 21458263363 in words is "twenty-one billion, four hundred fifty-eight million, two hundred sixty-three thousand, three hundred sixty-three".