40288978730029 has 2 divisors, whose sum is σ = 40288978730030. Its totient is φ = 40288978730028.

The previous prime is 40288978729997. The next prime is 40288978730057. The reversal of 40288978730029 is 92003787988204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39888445432900 + 400533297129 = 6315730^2 + 632877^2 .

It is a cyclic number.

It is not a de Polignac number, because 40288978730029 - 2⁵ = 40288978729997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40288978730929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20144489365014 + 20144489365015.

It is an arithmetic number, because the mean of its divisors is an integer number (20144489365015).

Almost surely, 2^{40288978730029} is an apocalyptic number.

It is an amenable number.

40288978730029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40288978730029 is an equidigital number, since it uses as much as digits as its factorization.

40288978730029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 67.

The spelling of 40288978730029 in words is "forty trillion, two hundred eighty-eight billion, nine hundred seventy-eight million, seven hundred thirty thousand, twenty-nine".