41217878729 has 2 divisors, whose sum is σ = 41217878730. Its totient is φ = 41217878728.

The previous prime is 41217878719. The next prime is 41217878759. The reversal of 41217878729 is 92787871214.

41217878729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23019868729 + 18198010000 = 151723^2 + 134900^2 .

It is a cyclic number.

It is not a de Polignac number, because 41217878729 - 2¹⁶ = 41217813193 is a prime.

It is not a weakly prime, because it can be changed into another prime (41217878719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20608939364 + 20608939365.

It is an arithmetic number, because the mean of its divisors is an integer number (20608939365).

Almost surely, 2^41217878729 is an apocalyptic number.

It is an amenable number.

41217878729 is a deficient number, since it is larger than the sum of its proper divisors (1).

41217878729 is an equidigital number, since it uses as much as digits as its factorization.

41217878729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3161088, while the sum is 56.

The spelling of 41217878729 in words is "forty-one billion, two hundred seventeen million, eight hundred seventy-eight thousand, seven hundred twenty-nine".