90534771609 has 8 divisors (see below), whose sum is σ = 120896207520. Its totient is φ = 60264925056.

The previous prime is 90534771589. The next prime is 90534771641. The reversal of 90534771609 is 90617743509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90534771609 - 2¹¹ = 90534769561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90534771709) 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 7 ways as a sum of consecutive naturals, for example, 22895032 + ... + 22898985.

It is an arithmetic number, because the mean of its divisors is an integer number (15112025940).

Almost surely, 2^90534771609 is an apocalyptic number.

It is an amenable number.

90534771609 is a deficient number, since it is larger than the sum of its proper divisors (30361435911).

90534771609 is a wasteful number, since it uses less digits than its factorization.

90534771609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45794679.

The product of its (nonzero) digits is 1428840, while the sum is 51.

The spelling of 90534771609 in words is "ninety billion, five hundred thirty-four million, seven hundred seventy-one thousand, six hundred nine".