40024173502081 has 2 divisors, whose sum is σ = 40024173502082. Its totient is φ = 40024173502080.

The previous prime is 40024173502073. The next prime is 40024173502087. The reversal of 40024173502081 is 18020537142004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30910319687025 + 9113853815056 = 5559705^2 + 3018916^2 .

It is a cyclic number.

It is not a de Polignac number, because 40024173502081 - 2³ = 40024173502073 is a prime.

It is a super-2 number, since 2×40024173502081² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40024173502081.

It is not a weakly prime, because it can be changed into another prime (40024173502087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20012086751040 + 20012086751041.

It is an arithmetic number, because the mean of its divisors is an integer number (20012086751041).

Almost surely, 2^{40024173502081} is an apocalyptic number.

It is an amenable number.

40024173502081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40024173502081 is an equidigital number, since it uses as much as digits as its factorization.

40024173502081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 40024173502081 in words is "forty trillion, twenty-four billion, one hundred seventy-three million, five hundred two thousand, eighty-one".