40665346680641 has 4 divisors (see below), whose sum is σ = 40665360792000. Its totient is φ = 40665332569284.

The previous prime is 40665346680589. The next prime is 40665346680677. The reversal of 40665346680641 is 14608664356604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40665346680641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40665346680941) 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, 1001381 + ... + 9073778.

It is an arithmetic number, because the mean of its divisors is an integer number (10166340198000).

Almost surely, 2^{40665346680641} is an apocalyptic number.

It is an amenable number.

40665346680641 is a deficient number, since it is larger than the sum of its proper divisors (14111359).

40665346680641 is a wasteful number, since it uses less digits than its factorization.

40665346680641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14111358.

The product of its (nonzero) digits is 59719680, while the sum is 59.

The spelling of 40665346680641 in words is "forty trillion, six hundred sixty-five billion, three hundred forty-six million, six hundred eighty thousand, six hundred forty-one".