40689288271 has 2 divisors, whose sum is σ = 40689288272. Its totient is φ = 40689288270.

The previous prime is 40689288259. The next prime is 40689288281. The reversal of 40689288271 is 17288298604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40689288271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40689288281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20344644135 + 20344644136.

It is an arithmetic number, because the mean of its divisors is an integer number (20344644136).

Almost surely, 2^40689288271 is an apocalyptic number.

40689288271 is a deficient number, since it is larger than the sum of its proper divisors (1).

40689288271 is an equidigital number, since it uses as much as digits as its factorization.

40689288271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 40689288271 in words is "forty billion, six hundred eighty-nine million, two hundred eighty-eight thousand, two hundred seventy-one".