1729961639047 has 2 divisors, whose sum is σ = 1729961639048. Its totient is φ = 1729961639046.

The previous prime is 1729961639041. The next prime is 1729961639059. The reversal of 1729961639047 is 7409361699271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1729961639047 - 2¹¹ = 1729961636999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1729961639047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1729961639041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864980819523 + 864980819524.

It is an arithmetic number, because the mean of its divisors is an integer number (864980819524).

Almost surely, 2^{1729961639047} is an apocalyptic number.

1729961639047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1729961639047 is an equidigital number, since it uses as much as digits as its factorization.

1729961639047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 64.

The spelling of 1729961639047 in words is "one trillion, seven hundred twenty-nine billion, nine hundred sixty-one million, six hundred thirty-nine thousand, forty-seven".