90443712740 has 12 divisors (see below), whose sum is σ = 189931796796. Its totient is φ = 36177485088.

The previous prime is 90443712727. The next prime is 90443712743. The reversal of 90443712740 is 4721734409.

It can be written as a sum of positive squares in 2 ways, for example, as 20743488676 + 69700224064 = 144026^2 + 264008^2 .

It is not an unprimeable number, because it can be changed into a prime (90443712743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261092799 + ... + 2261092838.

It is an arithmetic number, because the mean of its divisors is an integer number (15827649733).

Almost surely, 2^90443712740 is an apocalyptic number.

It is an amenable number.

90443712740 is an abundant number, since it is smaller than the sum of its proper divisors (99488084056).

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

90443712740 is a wasteful number, since it uses less digits than its factorization.

90443712740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522185646 (or 4522185644 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 90443712740 in words is "ninety billion, four hundred forty-three million, seven hundred twelve thousand, seven hundred forty".