642026048635 has 16 divisors (see below), whose sum is σ = 858684996000. Its totient is φ = 457965328896.

The previous prime is 642026048633. The next prime is 642026048639. The reversal of 642026048635 is 536840620246.

It is a cyclic number.

It is not a de Polignac number, because 642026048635 - 2¹ = 642026048633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642026048633) 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 15 ways as a sum of consecutive naturals, for example, 198768060 + ... + 198771289.

It is an arithmetic number, because the mean of its divisors is an integer number (53667812250).

Almost surely, 2^642026048635 is an apocalyptic number.

642026048635 is a deficient number, since it is larger than the sum of its proper divisors (216658947365).

642026048635 is a wasteful number, since it uses less digits than its factorization.

642026048635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397539390.

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 642026048635 in words is "six hundred forty-two billion, twenty-six million, forty-eight thousand, six hundred thirty-five".