90230231105009 has 2 divisors, whose sum is σ = 90230231105010. Its totient is φ = 90230231105008.

The previous prime is 90230231104987. The next prime is 90230231105051. The reversal of 90230231105009 is 90050113203209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76192769949409 + 14037461155600 = 8728847^2 + 3746660^2 .

It is a cyclic number.

It is not a de Polignac number, because 90230231105009 - 2²⁰ = 90230230056433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90230231105009.

It is not a weakly prime, because it can be changed into another prime (90230231102009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45115115552504 + 45115115552505.

It is an arithmetic number, because the mean of its divisors is an integer number (45115115552505).

Almost surely, 2^{90230231105009} is an apocalyptic number.

It is an amenable number.

90230231105009 is a deficient number, since it is larger than the sum of its proper divisors (1).

90230231105009 is an equidigital number, since it uses as much as digits as its factorization.

90230231105009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The spelling of 90230231105009 in words is "ninety trillion, two hundred thirty billion, two hundred thirty-one million, one hundred five thousand, nine".