642227833345 has 8 divisors (see below), whose sum is σ = 880769600064. Its totient is φ = 440384799984.

The previous prime is 642227833327. The next prime is 642227833367. The reversal of 642227833345 is 543338722246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642227833345 - 2⁷ = 642227833217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9174683299 + ... + 9174683368.

It is an arithmetic number, because the mean of its divisors is an integer number (110096200008).

Almost surely, 2^642227833345 is an apocalyptic number.

It is an amenable number.

642227833345 is a deficient number, since it is larger than the sum of its proper divisors (238541766719).

642227833345 is a wasteful number, since it uses less digits than its factorization.

642227833345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18349366679.

The product of its digits is 5806080, while the sum is 49.

The spelling of 642227833345 in words is "six hundred forty-two billion, two hundred twenty-seven million, eight hundred thirty-three thousand, three hundred forty-five".