63071634218 has 24 divisors (see below), whose sum is σ = 99135276996. Its totient is φ = 30092832000.

The previous prime is 63071634217. The next prime is 63071634221. The reversal of 63071634218 is 81243617036.

It can be written as a sum of positive squares in 2 ways, for example, as 63069792769 + 1841449 = 251137^2 + 1357^2 .

It is not an unprimeable number, because it can be changed into a prime (63071634211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374618 + ... + 516218.

Almost surely, 2^63071634218 is an apocalyptic number.

63071634218 is a deficient number, since it is larger than the sum of its proper divisors (36063642778).

63071634218 is a wasteful number, since it uses less digits than its factorization.

63071634218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142070 (or 142047 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 63071634218 in words is "sixty-three billion, seventy-one million, six hundred thirty-four thousand, two hundred eighteen".