40665345146663 has 4 divisors (see below), whose sum is σ = 40678201724328. Its totient is φ = 40652488569000.

The previous prime is 40665345146659. The next prime is 40665345146687. The reversal of 40665345146663 is 36664154356604.

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

It is a cyclic number.

It is not a de Polignac number, because 40665345146663 - 2² = 40665345146659 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 (40665345146563) 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, 6428284088 + ... + 6428290413.

It is an arithmetic number, because the mean of its divisors is an integer number (10169550431082).

Almost surely, 2^{40665345146663} is an apocalyptic number.

40665345146663 is a deficient number, since it is larger than the sum of its proper divisors (12856577665).

40665345146663 is a wasteful number, since it uses less digits than its factorization.

40665345146663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856577664.

The product of its (nonzero) digits is 111974400, while the sum is 59.

The spelling of 40665345146663 in words is "forty trillion, six hundred sixty-five billion, three hundred forty-five million, one hundred forty-six thousand, six hundred sixty-three".