21374443203263 has 2 divisors, whose sum is σ = 21374443203264. Its totient is φ = 21374443203262.

The previous prime is 21374443203101. The next prime is 21374443203301. The reversal of 21374443203263 is 36230234447312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21374443203263 - 2³² = 21370148235967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21374443203863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10687221601631 + 10687221601632.

It is an arithmetic number, because the mean of its divisors is an integer number (10687221601632).

Almost surely, 2^{21374443203263} is an apocalyptic number.

21374443203263 is a deficient number, since it is larger than the sum of its proper divisors (1).

21374443203263 is an equidigital number, since it uses as much as digits as its factorization.

21374443203263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 44.

The spelling of 21374443203263 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred forty-three million, two hundred three thousand, two hundred sixty-three".