642003454786 has 16 divisors (see below), whose sum is σ = 990352440000. Its totient is φ = 311961001968.

The previous prime is 642003454777. The next prime is 642003454811. The reversal of 642003454786 is 687454300246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18739561 + ... + 18773788.

It is an arithmetic number, because the mean of its divisors is an integer number (61897027500).

Almost surely, 2^642003454786 is an apocalyptic number.

642003454786 is a deficient number, since it is larger than the sum of its proper divisors (348348985214).

642003454786 is a wasteful number, since it uses less digits than its factorization.

642003454786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37513593.

The product of its (nonzero) digits is 3870720, while the sum is 49.

The spelling of 642003454786 in words is "six hundred forty-two billion, three million, four hundred fifty-four thousand, seven hundred eighty-six".