40828780129 has 2 divisors, whose sum is σ = 40828780130. Its totient is φ = 40828780128.

The previous prime is 40828780067. The next prime is 40828780163. The reversal of 40828780129 is 92108782804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40663529104 + 165251025 = 201652^2 + 12855^2 .

It is a cyclic number.

It is not a de Polignac number, because 40828780129 - 2⁷ = 40828780001 is a prime.

It is not a weakly prime, because it can be changed into another prime (40828780169) 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, 20414390064 + 20414390065.

It is an arithmetic number, because the mean of its divisors is an integer number (20414390065).

Almost surely, 2^40828780129 is an apocalyptic number.

It is an amenable number.

40828780129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40828780129 is an equidigital number, since it uses as much as digits as its factorization.

40828780129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 40828780129 in words is "forty billion, eight hundred twenty-eight million, seven hundred eighty thousand, one hundred twenty-nine".