63729297813 has 8 divisors (see below), whose sum is σ = 85751960800. Its totient is φ = 42096416688.

The previous prime is 63729297809. The next prime is 63729297839. The reversal of 63729297813 is 31879292736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63729297813 - 2² = 63729297809 is a prime.

It is a super-2 number, since 2×63729297813² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63729297883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97445083 + ... + 97445736.

It is an arithmetic number, because the mean of its divisors is an integer number (10718995100).

Almost surely, 2^63729297813 is an apocalyptic number.

It is an amenable number.

63729297813 is a deficient number, since it is larger than the sum of its proper divisors (22022662987).

63729297813 is a wasteful number, since it uses less digits than its factorization.

63729297813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194890931.

The product of its digits is 6858432, while the sum is 57.

The spelling of 63729297813 in words is "sixty-three billion, seven hundred twenty-nine million, two hundred ninety-seven thousand, eight hundred thirteen".