642482813163 has 4 divisors (see below), whose sum is σ = 856643750888. Its totient is φ = 428321875440.

The previous prime is 642482813143. The next prime is 642482813191. The reversal of 642482813163 is 361318284246.

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

It is not a de Polignac number, because 642482813163 - 2⁵ = 642482813131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642482813143) 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, 107080468858 + ... + 107080468863.

It is an arithmetic number, because the mean of its divisors is an integer number (214160937722).

Almost surely, 2^642482813163 is an apocalyptic number.

642482813163 is a deficient number, since it is larger than the sum of its proper divisors (214160937725).

642482813163 is a wasteful number, since it uses less digits than its factorization.

642482813163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214160937724.

The product of its digits is 1327104, while the sum is 48.

The spelling of 642482813163 in words is "six hundred forty-two billion, four hundred eighty-two million, eight hundred thirteen thousand, one hundred sixty-three".