40880800861 has 2 divisors, whose sum is σ = 40880800862. Its totient is φ = 40880800860.

The previous prime is 40880800801. The next prime is 40880800879. The reversal of 40880800861 is 16800808804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40880796100 + 4761 = 202190^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 40880800861 - 2⁷ = 40880800733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40880800801) 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, 20440400430 + 20440400431.

It is an arithmetic number, because the mean of its divisors is an integer number (20440400431).

Almost surely, 2^40880800861 is an apocalyptic number.

It is an amenable number.

40880800861 is a deficient number, since it is larger than the sum of its proper divisors (1).

40880800861 is an equidigital number, since it uses as much as digits as its factorization.

40880800861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98304, while the sum is 43.

The spelling of 40880800861 in words is "forty billion, eight hundred eighty million, eight hundred thousand, eight hundred sixty-one".