21550500497363 has 2 divisors, whose sum is σ = 21550500497364. Its totient is φ = 21550500497362.

The previous prime is 21550500497327. The next prime is 21550500497387. The reversal of 21550500497363 is 36379400505512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21550500497363 - 2²⁴ = 21550483720147 is a prime.

It is not a weakly prime, because it can be changed into another prime (21550500491363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10775250248681 + 10775250248682.

It is an arithmetic number, because the mean of its divisors is an integer number (10775250248682).

Almost surely, 2^{21550500497363} is an apocalyptic number.

21550500497363 is a deficient number, since it is larger than the sum of its proper divisors (1).

21550500497363 is an equidigital number, since it uses as much as digits as its factorization.

21550500497363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 50.

The spelling of 21550500497363 in words is "twenty-one trillion, five hundred fifty billion, five hundred million, four hundred ninety-seven thousand, three hundred sixty-three".