1040691241643 has 4 divisors (see below), whose sum is σ = 1040700459360. Its totient is φ = 1040682023928.

The previous prime is 1040691241553. The next prime is 1040691241649. The reversal of 1040691241643 is 3461421960401.

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-1040691241643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040691241643.

It is not an unprimeable number, because it can be changed into a prime (1040691241649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4437380 + ... + 4666017.

It is an arithmetic number, because the mean of its divisors is an integer number (260175114840).

Almost surely, 2^{1040691241643} is an apocalyptic number.

1040691241643 is a deficient number, since it is larger than the sum of its proper divisors (9217717).

1040691241643 is an equidigital number, since it uses as much as digits as its factorization.

1040691241643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217716.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 1040691241643 in words is "one trillion, forty billion, six hundred ninety-one million, two hundred forty-one thousand, six hundred forty-three".