642802327959 has 32 divisors (see below), whose sum is σ = 939306885120. Its totient is φ = 387777218400.

The previous prime is 642802327883. The next prime is 642802327997. The reversal of 642802327959 is 959723208246.

It is not a de Polignac number, because 642802327959 - 2¹⁶ = 642802262423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642802327899 and 642802327908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642802327159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68095962 + ... + 68105400.

It is an arithmetic number, because the mean of its divisors is an integer number (29353340160).

Almost surely, 2^642802327959 is an apocalyptic number.

642802327959 is a deficient number, since it is larger than the sum of its proper divisors (296504557161).

642802327959 is a wasteful number, since it uses less digits than its factorization.

642802327959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 642802327959 in words is "six hundred forty-two billion, eight hundred two million, three hundred twenty-seven thousand, nine hundred fifty-nine".