63969834687 has 32 divisors (see below), whose sum is σ = 95658001920. Its totient is φ = 37683803520.

The previous prime is 63969834671. The next prime is 63969834737. The reversal of 63969834687 is 78643896936.

It is not a de Polignac number, because 63969834687 - 2⁴ = 63969834671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63969834637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1211014 + ... + 1262732.

It is an arithmetic number, because the mean of its divisors is an integer number (2989312560).

Almost surely, 2^63969834687 is an apocalyptic number.

63969834687 is a deficient number, since it is larger than the sum of its proper divisors (31688167233).

63969834687 is a wasteful number, since it uses less digits than its factorization.

63969834687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52783.

The product of its digits is 282175488, while the sum is 69.

The spelling of 63969834687 in words is "sixty-three billion, nine hundred sixty-nine million, eight hundred thirty-four thousand, six hundred eighty-seven".