40410881081 has 2 divisors, whose sum is σ = 40410881082. Its totient is φ = 40410881080.

The previous prime is 40410881047. The next prime is 40410881087. The reversal of 40410881081 is 18018801404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28667907856 + 11742973225 = 169316^2 + 108365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40410881081 is a prime.

It is a super-2 number, since 2×40410881081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40410881087) 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, 20205440540 + 20205440541.

It is an arithmetic number, because the mean of its divisors is an integer number (20205440541).

Almost surely, 2^40410881081 is an apocalyptic number.

It is an amenable number.

40410881081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40410881081 is an equidigital number, since it uses as much as digits as its factorization.

40410881081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 35.

The spelling of 40410881081 in words is "forty billion, four hundred ten million, eight hundred eighty-one thousand, eighty-one".