90245244254209 has 16 divisors (see below), whose sum is σ = 100778368610304. Its totient is φ = 80101784322000.

The previous prime is 90245244254189. The next prime is 90245244254239.

90245244254209 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 90245244254209 - 2⁵ = 90245244254177 is a prime.

It is a super-2 number, since 2×90245244254209² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90245244254239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36189169 + ... + 38602414.

It is an arithmetic number, because the mean of its divisors is an integer number (6298648038144).

Almost surely, 2^{90245244254209} is an apocalyptic number.

It is an amenable number.

90245244254209 is a deficient number, since it is larger than the sum of its proper divisors (10533124356095).

90245244254209 is a wasteful number, since it uses less digits than its factorization.

90245244254209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74794188.

The product of its (nonzero) digits is 8294400, while the sum is 52.

The spelling of 90245244254209 in words is "ninety trillion, two hundred forty-five billion, two hundred forty-four million, two hundred fifty-four thousand, two hundred nine".