642233444332245 has 16 divisors (see below), whose sum is σ = 1031230356172992. Its totient is φ = 341305555230080.

The previous prime is 642233444332219. The next prime is 642233444332313. The reversal of 642233444332245 is 542233444332246.

It is a happy number.

It is not a de Polignac number, because 642233444332245 - 2⁵ = 642233444332213 is a prime.

It is a super-3 number, since 3×642233444332245³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76184271507 + ... + 76184279936.

It is an arithmetic number, because the mean of its divisors is an integer number (64451897260812).

Almost surely, 2^{642233444332245} is an apocalyptic number.

It is an amenable number.

642233444332245 is a deficient number, since it is larger than the sum of its proper divisors (388996911840747).

642233444332245 is a wasteful number, since it uses less digits than its factorization.

642233444332245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152368551732.

The product of its digits is 39813120, while the sum is 51.

Subtracting from 642233444332245 its reverse (542233444332246), we obtain a palindrome (99999999999999).

The spelling of 642233444332245 in words is "six hundred forty-two trillion, two hundred thirty-three billion, four hundred forty-four million, three hundred thirty-two thousand, two hundred forty-five".