90563656533 has 8 divisors (see below), whose sum is σ = 138001762368. Its totient is φ = 51750660864.

The previous prime is 90563656499. The next prime is 90563656537. The reversal of 90563656533 is 33565636509.

It is a happy number.

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

It is not a de Polignac number, because 90563656533 - 2¹⁴ = 90563640149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90563656537) 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, 2156277516 + ... + 2156277557.

It is an arithmetic number, because the mean of its divisors is an integer number (17250220296).

Almost surely, 2^90563656533 is an apocalyptic number.

It is an amenable number.

90563656533 is a deficient number, since it is larger than the sum of its proper divisors (47438105835).

90563656533 is a wasteful number, since it uses less digits than its factorization.

90563656533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312555083.

The product of its (nonzero) digits is 6561000, while the sum is 51.

The spelling of 90563656533 in words is "ninety billion, five hundred sixty-three million, six hundred fifty-six thousand, five hundred thirty-three".