90805720840935 has 16 divisors (see below), whose sum is σ = 146622081360480. Its totient is φ = 47985408443520.

The previous prime is 90805720840921. The next prime is 90805720840943. The reversal of 90805720840935 is 53904802750809.

It is not a de Polignac number, because 90805720840935 - 2³⁶ = 90737001364199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27769331956 + ... + 27769335225.

It is an arithmetic number, because the mean of its divisors is an integer number (9163880085030).

Almost surely, 2^{90805720840935} is an apocalyptic number.

90805720840935 is a deficient number, since it is larger than the sum of its proper divisors (55816360519545).

90805720840935 is a wasteful number, since it uses less digits than its factorization.

90805720840935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55538667298.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 90805720840935 in words is "ninety trillion, eight hundred five billion, seven hundred twenty million, eight hundred forty thousand, nine hundred thirty-five".