1405016179729 has 2 divisors, whose sum is σ = 1405016179730. Its totient is φ = 1405016179728.

The previous prime is 1405016179727. The next prime is 1405016179733. The reversal of 1405016179729 is 9279716105041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1229348737600 + 175667442129 = 1108760^2 + 419127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405016179729 - 2¹ = 1405016179727 is a prime.

Together with 1405016179727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1405016179727) 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, 702508089864 + 702508089865.

It is an arithmetic number, because the mean of its divisors is an integer number (702508089865).

Almost surely, 2^{1405016179729} is an apocalyptic number.

It is an amenable number.

1405016179729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405016179729 is an equidigital number, since it uses as much as digits as its factorization.

1405016179729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 1405016179729 in words is "one trillion, four hundred five billion, sixteen million, one hundred seventy-nine thousand, seven hundred twenty-nine".