90436561683 has 64 divisors (see below), whose sum is σ = 140572938240. Its totient is φ = 51252461568.

The previous prime is 90436561681. The next prime is 90436561717. The reversal of 90436561683 is 38616563409.

It is a happy number.

It is not a de Polignac number, because 90436561683 - 2¹ = 90436561681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90436561681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9542035 + ... + 9551507.

It is an arithmetic number, because the mean of its divisors is an integer number (2196452160).

Almost surely, 2^90436561683 is an apocalyptic number.

90436561683 is a deficient number, since it is larger than the sum of its proper divisors (50136376557).

90436561683 is a wasteful number, since it uses less digits than its factorization.

90436561683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9908.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 90436561683 in words is "ninety billion, four hundred thirty-six million, five hundred sixty-one thousand, six hundred eighty-three".