642638484836246 has 32 divisors (see below), whose sum is σ = 1003211758080000. Its totient is φ = 308368371118752.

The previous prime is 642638484836233. The next prime is 642638484836267.

642638484836246 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227174195 + ... + 229985633.

It is an arithmetic number, because the mean of its divisors is an integer number (31350367440000).

Almost surely, 2^{642638484836246} is an apocalyptic number.

642638484836246 is a deficient number, since it is larger than the sum of its proper divisors (360573273243754).

642638484836246 is a wasteful number, since it uses less digits than its factorization.

642638484836246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835236.

The product of its digits is 6115295232, while the sum is 74.

The spelling of 642638484836246 in words is "six hundred forty-two trillion, six hundred thirty-eight billion, four hundred eighty-four million, eight hundred thirty-six thousand, two hundred forty-six".