90546464509 has 4 divisors (see below), whose sum is σ = 90553178716. Its totient is φ = 90539750304.

The previous prime is 90546464479. The next prime is 90546464513.

90546464509 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56511749284 + 34034715225 = 237722^2 + 184485^2 .

It is a cyclic number.

It is not a de Polignac number, because 90546464509 - 2³³ = 81956529917 is a prime.

It is a super-2 number, since 2×90546464509² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90546564509) 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 3 ways as a sum of consecutive naturals, for example, 3336834 + ... + 3363859.

It is an arithmetic number, because the mean of its divisors is an integer number (22638294679).

Almost surely, 2^90546464509 is an apocalyptic number.

It is an amenable number.

90546464509 is a deficient number, since it is larger than the sum of its proper divisors (6714207).

90546464509 is a wasteful number, since it uses less digits than its factorization.

90546464509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714206.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 90546464509 in words is "ninety billion, five hundred forty-six million, four hundred sixty-four thousand, five hundred nine".