42623023644643 has 16 divisors (see below), whose sum is σ = 48644044839936. Its totient is φ = 36997784985600.

The previous prime is 42623023644623. The next prime is 42623023644653. The reversal of 42623023644643 is 34644632032624.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42623023644643 is a prime.

It is a super-2 number, since 2×42623023644643² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42623023644623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83526846 + ... + 84035587.

It is an arithmetic number, because the mean of its divisors is an integer number (3040252802496).

Almost surely, 2^{42623023644643} is an apocalyptic number.

42623023644643 is a deficient number, since it is larger than the sum of its proper divisors (6021021195293).

42623023644643 is a wasteful number, since it uses less digits than its factorization.

42623023644643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167563614.

The product of its (nonzero) digits is 11943936, while the sum is 49.

The spelling of 42623023644643 in words is "forty-two trillion, six hundred twenty-three billion, twenty-three million, six hundred forty-four thousand, six hundred forty-three".