21602350766323 has 2 divisors, whose sum is σ = 21602350766324. Its totient is φ = 21602350766322.

The previous prime is 21602350766317. The next prime is 21602350766431. The reversal of 21602350766323 is 32366705320612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21602350766323 - 2⁵ = 21602350766291 is a prime.

It is not a weakly prime, because it can be changed into another prime (21602350566323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10801175383161 + 10801175383162.

It is an arithmetic number, because the mean of its divisors is an integer number (10801175383162).

Almost surely, 2^{21602350766323} is an apocalyptic number.

21602350766323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21602350766323 is an equidigital number, since it uses as much as digits as its factorization.

21602350766323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 46.

The spelling of 21602350766323 in words is "twenty-one trillion, six hundred two billion, three hundred fifty million, seven hundred sixty-six thousand, three hundred twenty-three".