42605450623 has 4 divisors (see below), whose sum is σ = 42717866440. Its totient is φ = 42493034808.

The previous prime is 42605450617. The next prime is 42605450639. The reversal of 42605450623 is 32605450624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42605450623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42605450663) 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, 56207340 + ... + 56208097.

It is an arithmetic number, because the mean of its divisors is an integer number (10679466610).

Almost surely, 2^42605450623 is an apocalyptic number.

42605450623 is a deficient number, since it is larger than the sum of its proper divisors (112415817).

42605450623 is a wasteful number, since it uses less digits than its factorization.

42605450623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112415816.

The product of its (nonzero) digits is 172800, while the sum is 37.

Subtracting from 42605450623 its reverse (32605450624), we obtain a palindrome (9999999999).

The spelling of 42605450623 in words is "forty-two billion, six hundred five million, four hundred fifty thousand, six hundred twenty-three".