90802623563 has 2 divisors, whose sum is σ = 90802623564. Its totient is φ = 90802623562.

The previous prime is 90802623551. The next prime is 90802623589. The reversal of 90802623563 is 36532620809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90802623563 - 2⁴ = 90802623547 is a prime.

It is not a weakly prime, because it can be changed into another prime (90802623523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45401311781 + 45401311782.

It is an arithmetic number, because the mean of its divisors is an integer number (45401311782).

Almost surely, 2^90802623563 is an apocalyptic number.

90802623563 is a deficient number, since it is larger than the sum of its proper divisors (1).

90802623563 is an equidigital number, since it uses as much as digits as its factorization.

90802623563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 90802623563 in words is "ninety billion, eight hundred two million, six hundred twenty-three thousand, five hundred sixty-three".