90555455509 has 8 divisors (see below), whose sum is σ = 91512675968. Its totient is φ = 89598718080.

The previous prime is 90555455479. The next prime is 90555455563.

90555455509 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 90555455509 - 2¹⁹ = 90554931221 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 (90555465509) 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, 262564 + ... + 500050.

It is an arithmetic number, because the mean of its divisors is an integer number (11439084496).

Almost surely, 2^90555455509 is an apocalyptic number.

It is an amenable number.

90555455509 is a deficient number, since it is larger than the sum of its proper divisors (957220459).

90555455509 is a wasteful number, since it uses less digits than its factorization.

90555455509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241515.

The product of its (nonzero) digits is 5062500, while the sum is 52.

The spelling of 90555455509 in words is "ninety billion, five hundred fifty-five million, four hundred fifty-five thousand, five hundred nine".