63216542041 has 3 divisors (see below), whose sum is σ = 63216793471. Its totient is φ = 63216290612.

The previous prime is 63216542033. The next prime is 63216542071. The reversal of 63216542041 is 14024561236.

The square root of 63216542041 is 251429.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4274413641 + 58942128400 = 65379^2 + 242780^2 .

It is not a de Polignac number, because 63216542041 - 2³ = 63216542033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63216541988 and 63216542006.

It is not an unprimeable number, because it can be changed into a prime (63216542071) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 125715 + ... + 377143.

Almost surely, 2^63216542041 is an apocalyptic number.

63216542041 is the 251429-th square number.

63216542041 is the 125715-th centered octagonal number.

It is an amenable number.

63216542041 is a deficient number, since it is larger than the sum of its proper divisors (251430).

63216542041 is an frugal number, since it uses more digits than its factorization.

63216542041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502858 (or 251429 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 63216542041 in words is "sixty-three billion, two hundred sixteen million, five hundred forty-two thousand, forty-one".