42345163105643 has 4 divisors (see below), whose sum is σ = 42380421360888. Its totient is φ = 42309904850400.

The previous prime is 42345163105639. The next prime is 42345163105649. The reversal of 42345163105643 is 34650136154324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42345163105643 - 2² = 42345163105639 is a prime.

It is a super-2 number, since 2×42345163105643² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42345163105649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17629125821 + ... + 17629128222.

It is an arithmetic number, because the mean of its divisors is an integer number (10595105340222).

Almost surely, 2^{42345163105643} is an apocalyptic number.

42345163105643 is a deficient number, since it is larger than the sum of its proper divisors (35258255245).

42345163105643 is a wasteful number, since it uses less digits than its factorization.

42345163105643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35258255244.

The product of its (nonzero) digits is 3110400, while the sum is 47.

Adding to 42345163105643 its reverse (34650136154324), we get a palindrome (76995299259967).

The spelling of 42345163105643 in words is "forty-two trillion, three hundred forty-five billion, one hundred sixty-three million, one hundred five thousand, six hundred forty-three".