40881611 has 2 divisors, whose sum is σ = 40881612. Its totient is φ = 40881610.

The previous prime is 40881601. The next prime is 40881623. The reversal of 40881611 is 11618804.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40881611 is a prime.

It is a super-2 number, since 2×40881611² = 3342612235910642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40881601) 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, 20440805 + 20440806.

It is an arithmetic number, because the mean of its divisors is an integer number (20440806).

Almost surely, 2^40881611 is an apocalyptic number.

40881611 is a deficient number, since it is larger than the sum of its proper divisors (1).

40881611 is an equidigital number, since it uses as much as digits as its factorization.

40881611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 40881611 is about 6393.8729264820. The cubic root of 40881611 is about 344.4895089572.

The spelling of 40881611 in words is "forty million, eight hundred eighty-one thousand, six hundred eleven".