240247393932691 has 2 divisors, whose sum is σ = 240247393932692. Its totient is φ = 240247393932690.

The previous prime is 240247393932629. The next prime is 240247393932713. The reversal of 240247393932691 is 196239393742042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240247393932691 - 2⁷ = 240247393932563 is a prime.

It is a super-2 number, since 2×240247393932691² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240247393936691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120123696966345 + 120123696966346.

It is an arithmetic number, because the mean of its divisors is an integer number (120123696966346).

Almost surely, 2^{240247393932691} is an apocalyptic number.

240247393932691 is a deficient number, since it is larger than the sum of its proper divisors (1).

240247393932691 is an equidigital number, since it uses as much as digits as its factorization.

240247393932691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105815808, while the sum is 64.

The spelling of 240247393932691 in words is "two hundred forty trillion, two hundred forty-seven billion, three hundred ninety-three million, nine hundred thirty-two thousand, six hundred ninety-one".