642860068246 has 48 divisors (see below), whose sum is σ = 1115902771200. Its totient is φ = 276781261680.

The previous prime is 642860068231. The next prime is 642860068297.

642860068246 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 642860068193 and 642860068202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41847915 + ... + 41863273.

It is an arithmetic number, because the mean of its divisors is an integer number (23247974400).

Almost surely, 2^642860068246 is an apocalyptic number.

642860068246 is a deficient number, since it is larger than the sum of its proper divisors (473042702954).

642860068246 is a wasteful number, since it uses less digits than its factorization.

642860068246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24505 (or 24494 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 642860068246 in words is "six hundred forty-two billion, eight hundred sixty million, sixty-eight thousand, two hundred forty-six".