642864383468246 has 8 divisors (see below), whose sum is σ = 997548181243920. Its totient is φ = 310348323053608.

The previous prime is 642864383468213. The next prime is 642864383468311.

642864383468246 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5541934340186 + ... + 5541934340301.

It is an arithmetic number, because the mean of its divisors is an integer number (124693522655490).

Almost surely, 2^{642864383468246} is an apocalyptic number.

642864383468246 is a deficient number, since it is larger than the sum of its proper divisors (354683797775674).

642864383468246 is a wasteful number, since it uses less digits than its factorization.

642864383468246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11083868680518.

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

The spelling of 642864383468246 in words is "six hundred forty-two trillion, eight hundred sixty-four billion, three hundred eighty-three million, four hundred sixty-eight thousand, two hundred forty-six".