90366884845 has 4 divisors (see below), whose sum is σ = 108440261820. Its totient is φ = 72293507872.

The previous prime is 90366884837. The next prime is 90366884849. The reversal of 90366884845 is 54848866309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54848866309 = 73 ⋅751354333.

It can be written as a sum of positive squares in 2 ways, for example, as 37908479401 + 52458405444 = 194701^2 + 229038^2 .

It is a cyclic number.

It is not a de Polignac number, because 90366884845 - 2³ = 90366884837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90366884849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9036688480 + ... + 9036688489.

It is an arithmetic number, because the mean of its divisors is an integer number (27110065455).

Almost surely, 2^90366884845 is an apocalyptic number.

It is an amenable number.

90366884845 is a deficient number, since it is larger than the sum of its proper divisors (18073376975).

90366884845 is a wasteful number, since it uses less digits than its factorization.

90366884845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18073376974.

The product of its (nonzero) digits is 39813120, while the sum is 61.

The spelling of 90366884845 in words is "ninety billion, three hundred sixty-six million, eight hundred eighty-four thousand, eight hundred forty-five".