63546812871 has 4 divisors (see below), whose sum is σ = 84729083832. Its totient is φ = 42364541912.

The previous prime is 63546812869. The next prime is 63546812887. The reversal of 63546812871 is 17821864536.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63546812871 - 2¹ = 63546812869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63546812071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10591135476 + ... + 10591135481.

It is an arithmetic number, because the mean of its divisors is an integer number (21182270958).

Almost surely, 2^63546812871 is an apocalyptic number.

63546812871 is a deficient number, since it is larger than the sum of its proper divisors (21182270961).

63546812871 is a wasteful number, since it uses less digits than its factorization.

63546812871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21182270960.

The product of its digits is 1935360, while the sum is 51.

The spelling of 63546812871 in words is "sixty-three billion, five hundred forty-six million, eight hundred twelve thousand, eight hundred seventy-one".