63438347830171 has 32 divisors (see below), whose sum is σ = 66811326382080. Its totient is φ = 60186734014464.

The previous prime is 63438347830133. The next prime is 63438347830201. The reversal of 63438347830171 is 17103874383436.

It is a cyclic number.

It is not a de Polignac number, because 63438347830171 - 2¹⁵ = 63438347797403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63438347830271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54384070 + ... + 55538308.

It is an arithmetic number, because the mean of its divisors is an integer number (2087853949440).

Almost surely, 2^{63438347830171} is an apocalyptic number.

63438347830171 is a deficient number, since it is larger than the sum of its proper divisors (3372978551909).

63438347830171 is a wasteful number, since it uses less digits than its factorization.

63438347830171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154635.

The product of its (nonzero) digits is 24385536, while the sum is 58.

The spelling of 63438347830171 in words is "sixty-three trillion, four hundred thirty-eight billion, three hundred forty-seven million, eight hundred thirty thousand, one hundred seventy-one".