63712884749 has 4 divisors (see below), whose sum is σ = 63718946460. Its totient is φ = 63706823040.

The previous prime is 63712884743. The next prime is 63712884751. The reversal of 63712884749 is 94748821736.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49214316649 + 14498568100 = 221843^2 + 120410^2 .

It is a cyclic number.

It is not a de Polignac number, because 63712884749 - 2¹⁶ = 63712819213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63712884743) 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 3 ways as a sum of consecutive naturals, for example, 3015062 + ... + 3036119.

It is an arithmetic number, because the mean of its divisors is an integer number (15929736615).

Almost surely, 2^63712884749 is an apocalyptic number.

It is an amenable number.

63712884749 is a deficient number, since it is larger than the sum of its proper divisors (6061711).

63712884749 is a wasteful number, since it uses less digits than its factorization.

63712884749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061710.

The product of its digits is 16257024, while the sum is 59.

The spelling of 63712884749 in words is "sixty-three billion, seven hundred twelve million, eight hundred eighty-four thousand, seven hundred forty-nine".