90618530233 has 16 divisors (see below), whose sum is σ = 113912668800. Its totient is φ = 70611834480.

The previous prime is 90618530221. The next prime is 90618530257. The reversal of 90618530233 is 33203581609.

It is not a de Polignac number, because 90618530233 - 2⁹ = 90618529721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90618530033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4853758 + ... + 4872391.

It is an arithmetic number, because the mean of its divisors is an integer number (7119541800).

Almost surely, 2^90618530233 is an apocalyptic number.

It is an amenable number.

90618530233 is a deficient number, since it is larger than the sum of its proper divisors (23294138567).

90618530233 is an equidigital number, since it uses as much as digits as its factorization.

90618530233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9726189 (or 9726167 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 90618530233 in words is "ninety billion, six hundred eighteen million, five hundred thirty thousand, two hundred thirty-three".