642333886767 has 24 divisors (see below), whose sum is σ = 936060840000. Its totient is φ = 424429524288.

The previous prime is 642333886763. The next prime is 642333886783. The reversal of 642333886767 is 767688333246.

It is not a de Polignac number, because 642333886767 - 2² = 642333886763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642333886763) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 103609 + ... + 1138157.

It is an arithmetic number, because the mean of its divisors is an integer number (39002535000).

Almost surely, 2^642333886767 is an apocalyptic number.

642333886767 is a deficient number, since it is larger than the sum of its proper divisors (293726953233).

642333886767 is a wasteful number, since it uses less digits than its factorization.

642333886767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035167 (or 1035164 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 63.

The spelling of 642333886767 in words is "six hundred forty-two billion, three hundred thirty-three million, eight hundred eighty-six thousand, seven hundred sixty-seven".