63868728530 has 16 divisors (see below), whose sum is σ = 114970078080. Its totient is φ = 25546076592.

The previous prime is 63868728509. The next prime is 63868728533. The reversal of 63868728530 is 3582786836.

It is not an unprimeable number, because it can be changed into a prime (63868728533) 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, 23561 + ... + 358179.

It is an arithmetic number, because the mean of its divisors is an integer number (7185629880).

Almost surely, 2^63868728530 is an apocalyptic number.

63868728530 is a deficient number, since it is larger than the sum of its proper divisors (51101349550).

63868728530 is a wasteful number, since it uses less digits than its factorization.

63868728530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353713.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 63868728530 in words is "sixty-three billion, eight hundred sixty-eight million, seven hundred twenty-eight thousand, five hundred thirty".