663729013719 has 24 divisors (see below), whose sum is σ = 961670361600. Its totient is φ = 441125990160.

The previous prime is 663729013709. The next prime is 663729013733. The reversal of 663729013719 is 917310927366.

It is a happy number.

It is not a de Polignac number, because 663729013719 - 2⁵ = 663729013687 is a prime.

It is a super-2 number, since 2×663729013719² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663729013709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4317364 + ... + 4468454.

It is an arithmetic number, because the mean of its divisors is an integer number (40069598400).

Almost surely, 2^663729013719 is an apocalyptic number.

663729013719 is a deficient number, since it is larger than the sum of its proper divisors (297941347881).

663729013719 is a wasteful number, since it uses less digits than its factorization.

663729013719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152595 (or 152592 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The spelling of 663729013719 in words is "six hundred sixty-three billion, seven hundred twenty-nine million, thirteen thousand, seven hundred nineteen".