40163673881437 has 2 divisors, whose sum is σ = 40163673881438. Its totient is φ = 40163673881436.

The previous prime is 40163673881333. The next prime is 40163673881521. The reversal of 40163673881437 is 73418837636104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25198582792761 + 14965091088676 = 5019819^2 + 3868474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40163673881437 is a prime.

It is a super-2 number, since 2×40163673881437² (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 (40163673821437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20081836940718 + 20081836940719.

It is an arithmetic number, because the mean of its divisors is an integer number (20081836940719).

Almost surely, 2^{40163673881437} is an apocalyptic number.

It is an amenable number.

40163673881437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40163673881437 is an equidigital number, since it uses as much as digits as its factorization.

40163673881437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48771072, while the sum is 61.

It can be divided in two parts, 40163 and 673881437, that added together give a square (673921600 = 25960²).

The spelling of 40163673881437 in words is "forty trillion, one hundred sixty-three billion, six hundred seventy-three million, eight hundred eighty-one thousand, four hundred thirty-seven".