90183162640 has 40 divisors (see below), whose sum is σ = 222009730200. Its totient is φ = 33951307776.

The previous prime is 90183162637. The next prime is 90183162697. The reversal of 90183162640 is 4626138109.

It can be written as a sum of positive squares in 4 ways, for example, as 22898952976 + 67284209664 = 151324^2 + 259392^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 90183162593 and 90183162602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33154215 + ... + 33156934.

It is an arithmetic number, because the mean of its divisors is an integer number (5550243255).

Almost surely, 2^90183162640 is an apocalyptic number.

It is an amenable number.

90183162640 is an abundant number, since it is smaller than the sum of its proper divisors (131826567560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90183162640 is a wasteful number, since it uses less digits than its factorization.

90183162640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66311179 (or 66311173 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 90183162640 in words is "ninety billion, one hundred eighty-three million, one hundred sixty-two thousand, six hundred forty".