642746416323 has 16 divisors (see below), whose sum is σ = 936132435072. Its totient is φ = 389031384000.

The previous prime is 642746416321. The next prime is 642746416331. The reversal of 642746416323 is 323614647246.

It is not a de Polignac number, because 642746416323 - 2¹ = 642746416321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642746416321) 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, 12771973 + ... + 12822198.

It is an arithmetic number, because the mean of its divisors is an integer number (58508277192).

Almost surely, 2^642746416323 is an apocalyptic number.

642746416323 is a deficient number, since it is larger than the sum of its proper divisors (293386018749).

642746416323 is a wasteful number, since it uses less digits than its factorization.

642746416323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25594946.

The product of its digits is 3483648, while the sum is 48.

The spelling of 642746416323 in words is "six hundred forty-two billion, seven hundred forty-six million, four hundred sixteen thousand, three hundred twenty-three".