40865749381013 has 4 divisors (see below), whose sum is σ = 40865803893120. Its totient is φ = 40865694868908.

The previous prime is 40865749380997. The next prime is 40865749381031. The reversal of 40865749381013 is 31018394756804.

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 not a de Polignac number, because 40865749381013 - 2⁴ = 40865749380997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40865749381063) 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, 26115653 + ... + 27636186.

It is an arithmetic number, because the mean of its divisors is an integer number (10216450973280).

Almost surely, 2^{40865749381013} is an apocalyptic number.

It is an amenable number.

40865749381013 is a deficient number, since it is larger than the sum of its proper divisors (54512107).

40865749381013 is an equidigital number, since it uses as much as digits as its factorization.

40865749381013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54512106.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 40865749381013 in words is "forty trillion, eight hundred sixty-five billion, seven hundred forty-nine million, three hundred eighty-one thousand, thirteen".