63433921172 has 12 divisors (see below), whose sum is σ = 111441306900. Its totient is φ = 31593547776.

The previous prime is 63433921171. The next prime is 63433921183. The reversal of 63433921172 is 27112933436.

It is a happy number.

63433921172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61545671056 + 1888250116 = 248084^2 + 43454^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63433921171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30852047 + ... + 30854102.

It is an arithmetic number, because the mean of its divisors is an integer number (9286775575).

Almost surely, 2^63433921172 is an apocalyptic number.

It is an amenable number.

63433921172 is a deficient number, since it is larger than the sum of its proper divisors (48007385728).

63433921172 is a wasteful number, since it uses less digits than its factorization.

63433921172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61706410 (or 61706408 counting only the distinct ones).

The product of its digits is 163296, while the sum is 41.

The spelling of 63433921172 in words is "sixty-three billion, four hundred thirty-three million, nine hundred twenty-one thousand, one hundred seventy-two".