90806240240644 has 24 divisors (see below), whose sum is σ = 159436099247040. Its totient is φ = 45253111944096.

The previous prime is 90806240240609. The next prime is 90806240240647. The reversal of 90806240240644 is 44604204260809.

It is not an unprimeable number, because it can be changed into a prime (90806240240647) 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, 3107859 + ... + 13830085.

It is an arithmetic number, because the mean of its divisors is an integer number (6643170801960).

Almost surely, 2^{90806240240644} is an apocalyptic number.

It is an amenable number.

90806240240644 is a deficient number, since it is larger than the sum of its proper divisors (68629859006396).

90806240240644 is a wasteful number, since it uses less digits than its factorization.

90806240240644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729227 (or 10729225 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 49.

The spelling of 90806240240644 in words is "ninety trillion, eight hundred six billion, two hundred forty million, two hundred forty thousand, six hundred forty-four".