63863436836 has 6 divisors (see below), whose sum is σ = 111761014470. Its totient is φ = 31931718416.

The previous prime is 63863436829. The next prime is 63863436839.

63863436836 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 47506561600 + 16356875236 = 217960^2 + 127894^2 .

It is not an unprimeable number, because it can be changed into a prime (63863436839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7982929601 + ... + 7982929608.

It is an arithmetic number, because the mean of its divisors is an integer number (18626835745).

Almost surely, 2^63863436836 is an apocalyptic number.

It is an amenable number.

63863436836 is a deficient number, since it is larger than the sum of its proper divisors (47897577634).

63863436836 is a wasteful number, since it uses less digits than its factorization.

63863436836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15965859213 (or 15965859211 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 56.

The spelling of 63863436836 in words is "sixty-three billion, eight hundred sixty-three million, four hundred thirty-six thousand, eight hundred thirty-six".