90805704208927 has 2 divisors, whose sum is σ = 90805704208928. Its totient is φ = 90805704208926.

The previous prime is 90805704208889. The next prime is 90805704208969. The reversal of 90805704208927 is 72980240750809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90805704208927 - 2²³ = 90805695820319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90805704208997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45402852104463 + 45402852104464.

It is an arithmetic number, because the mean of its divisors is an integer number (45402852104464).

Almost surely, 2^{90805704208927} is an apocalyptic number.

90805704208927 is a deficient number, since it is larger than the sum of its proper divisors (1).

90805704208927 is an equidigital number, since it uses as much as digits as its factorization.

90805704208927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 90805704208927 in words is "ninety trillion, eight hundred five billion, seven hundred four million, two hundred eight thousand, nine hundred twenty-seven".