90366638456 has 16 divisors (see below), whose sum is σ = 169453571400. Its totient is φ = 45179019424.

The previous prime is 90366638447. The next prime is 90366638477. The reversal of 90366638456 is 65483666309.

It is a super-2 number, since 2×90366638456² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 447266 + ... + 617073.

Almost surely, 2^90366638456 is an apocalyptic number.

It is an amenable number.

90366638456 is a deficient number, since it is larger than the sum of its proper divisors (79086932944).

90366638456 is a wasteful number, since it uses less digits than its factorization.

90366638456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074958 (or 1074954 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 56.

The spelling of 90366638456 in words is "ninety billion, three hundred sixty-six million, six hundred thirty-eight thousand, four hundred fifty-six".