90433443311021 has 8 divisors (see below), whose sum is σ = 95862240145080. Its totient is φ = 85016777868288.

The previous prime is 90433443311011. The next prime is 90433443311041. The reversal of 90433443311021 is 12011334433409.

It can be written as a sum of positive squares in 4 ways, for example, as 61166695795396 + 29266747515625 = 7820914^2 + 5409875^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90433443311021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90433443311011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3032832476 + ... + 3032862293.

It is an arithmetic number, because the mean of its divisors is an integer number (11982780018135).

Almost surely, 2^{90433443311021} is an apocalyptic number.

It is an amenable number.

90433443311021 is a deficient number, since it is larger than the sum of its proper divisors (5428796834059).

90433443311021 is a wasteful number, since it uses less digits than its factorization.

90433443311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6065695663.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 90433443311021 in words is "ninety trillion, four hundred thirty-three billion, four hundred forty-three million, three hundred eleven thousand, twenty-one".