90862535609 has 4 divisors (see below), whose sum is σ = 90959096100. Its totient is φ = 90765975120.

The previous prime is 90862535597. The next prime is 90862535611. The reversal of 90862535609 is 90653526809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67988998009 + 22873537600 = 260747^2 + 151240^2 .

It is a cyclic number.

It is not a de Polignac number, because 90862535609 - 2⁴ = 90862535593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90862535639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48278834 + ... + 48280715.

It is an arithmetic number, because the mean of its divisors is an integer number (22739774025).

Almost surely, 2^90862535609 is an apocalyptic number.

It is an amenable number.

90862535609 is a deficient number, since it is larger than the sum of its proper divisors (96560491).

90862535609 is an equidigital number, since it uses as much as digits as its factorization.

90862535609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96560490.

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 90862535609 in words is "ninety billion, eight hundred sixty-two million, five hundred thirty-five thousand, six hundred nine".