63729297812 has 12 divisors (see below), whose sum is σ = 112170932916. Its totient is φ = 31680459840.

The previous prime is 63729297809. The next prime is 63729297839. The reversal of 63729297812 is 21879292736.

It can be written as a sum of positive squares in 2 ways, for example, as 59207542276 + 4521755536 = 243326^2 + 67244^2 .

It is a super-2 number, since 2×63729297812² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46046489 + ... + 46047872.

It is an arithmetic number, because the mean of its divisors is an integer number (9347577743).

Almost surely, 2^63729297812 is an apocalyptic number.

It is an amenable number.

63729297812 is a deficient number, since it is larger than the sum of its proper divisors (48441635104).

63729297812 is a wasteful number, since it uses less digits than its factorization.

63729297812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92094538 (or 92094536 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The spelling of 63729297812 in words is "sixty-three billion, seven hundred twenty-nine million, two hundred ninety-seven thousand, eight hundred twelve".