42535663673 has 4 divisors (see below), whose sum is σ = 43907781888. Its totient is φ = 41163545460.

The previous prime is 42535663661. The next prime is 42535663699. The reversal of 42535663673 is 37636653524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42535663673 - 2²² = 42531469369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42535663613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686059061 + ... + 686059122.

It is an arithmetic number, because the mean of its divisors is an integer number (10976945472).

Almost surely, 2^42535663673 is an apocalyptic number.

It is an amenable number.

42535663673 is a deficient number, since it is larger than the sum of its proper divisors (1372118215).

42535663673 is a wasteful number, since it uses less digits than its factorization.

42535663673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372118214.

The product of its digits is 8164800, while the sum is 50.

The spelling of 42535663673 in words is "forty-two billion, five hundred thirty-five million, six hundred sixty-three thousand, six hundred seventy-three".