63172434641 has 8 divisors (see below), whose sum is σ = 65527065120. Its totient is φ = 60858054432.

The previous prime is 63172434631. The next prime is 63172434643. The reversal of 63172434641 is 14643427136.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63172434641 - 2¹⁰ = 63172433617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63172434643) 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, 10059371 + ... + 10065648.

It is an arithmetic number, because the mean of its divisors is an integer number (8190883140).

Almost surely, 2^63172434641 is an apocalyptic number.

It is an amenable number.

63172434641 is a deficient number, since it is larger than the sum of its proper divisors (2354630479).

63172434641 is a wasteful number, since it uses less digits than its factorization.

63172434641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20125135.

The product of its digits is 290304, while the sum is 41.

The spelling of 63172434641 in words is "sixty-three billion, one hundred seventy-two million, four hundred thirty-four thousand, six hundred forty-one".