40140734217191 has 2 divisors, whose sum is σ = 40140734217192. Its totient is φ = 40140734217190.

The previous prime is 40140734217121. The next prime is 40140734217217. The reversal of 40140734217191 is 19171243704104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40140734217191 is a prime.

It is a super-2 number, since 2×40140734217191² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40140734217121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20070367108595 + 20070367108596.

It is an arithmetic number, because the mean of its divisors is an integer number (20070367108596).

Almost surely, 2^{40140734217191} is an apocalyptic number.

40140734217191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40140734217191 is an equidigital number, since it uses as much as digits as its factorization.

40140734217191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 40140734217191 in words is "forty trillion, one hundred forty billion, seven hundred thirty-four million, two hundred seventeen thousand, one hundred ninety-one".