40968607643 has 2 divisors, whose sum is σ = 40968607644. Its totient is φ = 40968607642.

The previous prime is 40968607639. The next prime is 40968607739. The reversal of 40968607643 is 34670686904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40968607643 - 2² = 40968607639 is a prime.

It is not a weakly prime, because it can be changed into another prime (40968607543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20484303821 + 20484303822.

It is an arithmetic number, because the mean of its divisors is an integer number (20484303822).

Almost surely, 2^40968607643 is an apocalyptic number.

40968607643 is a deficient number, since it is larger than the sum of its proper divisors (1).

40968607643 is an equidigital number, since it uses as much as digits as its factorization.

40968607643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 40968607643 in words is "forty billion, nine hundred sixty-eight million, six hundred seven thousand, six hundred forty-three".