40701661972943 has 2 divisors, whose sum is σ = 40701661972944. Its totient is φ = 40701661972942.

The previous prime is 40701661972903. The next prime is 40701661973041. The reversal of 40701661972943 is 34927916610704.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40701661972943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40701661972903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20350830986471 + 20350830986472.

It is an arithmetic number, because the mean of its divisors is an integer number (20350830986472).

Almost surely, 2^{40701661972943} is an apocalyptic number.

40701661972943 is a deficient number, since it is larger than the sum of its proper divisors (1).

40701661972943 is an equidigital number, since it uses as much as digits as its factorization.

40701661972943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 40701661972943 in words is "forty trillion, seven hundred one billion, six hundred sixty-one million, nine hundred seventy-two thousand, nine hundred forty-three".