40666884847 has 4 divisors (see below), whose sum is σ = 40759520560. Its totient is φ = 40574249136.

The previous prime is 40666884829. The next prime is 40666884893. The reversal of 40666884847 is 74848866604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40666884847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666884827) 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, 46317198 + ... + 46318075.

It is an arithmetic number, because the mean of its divisors is an integer number (10189880140).

Almost surely, 2^40666884847 is an apocalyptic number.

40666884847 is a deficient number, since it is larger than the sum of its proper divisors (92635713).

40666884847 is an equidigital number, since it uses as much as digits as its factorization.

40666884847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92635712.

The product of its (nonzero) digits is 49545216, while the sum is 61.

The spelling of 40666884847 in words is "forty billion, six hundred sixty-six million, eight hundred eighty-four thousand, eight hundred forty-seven".