90585656449 has 4 divisors (see below), whose sum is σ = 90586273536. Its totient is φ = 90585039364.

The previous prime is 90585656417. The next prime is 90585656461. The reversal of 90585656449 is 94465658509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 90585656449 - 2⁵ = 90585656417 is a prime.

It is a super-2 number, since 2×90585656449² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90585656849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52392 + ... + 428854.

It is an arithmetic number, because the mean of its divisors is an integer number (22646568384).

Almost surely, 2^90585656449 is an apocalyptic number.

It is an amenable number.

90585656449 is a deficient number, since it is larger than the sum of its proper divisors (617087).

90585656449 is a wasteful number, since it uses less digits than its factorization.

90585656449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617086.

The product of its (nonzero) digits is 46656000, while the sum is 61.

The spelling of 90585656449 in words is "ninety billion, five hundred eighty-five million, six hundred fifty-six thousand, four hundred forty-nine".