42191735667 has 4 divisors (see below), whose sum is σ = 56255647560. Its totient is φ = 28127823776.

The previous prime is 42191735653. The next prime is 42191735671. The reversal of 42191735667 is 76653719124.

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 42191735667 - 2¹⁰ = 42191734643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42191735627) 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, 7031955942 + ... + 7031955947.

It is an arithmetic number, because the mean of its divisors is an integer number (14063911890).

Almost surely, 2^42191735667 is an apocalyptic number.

42191735667 is a deficient number, since it is larger than the sum of its proper divisors (14063911893).

42191735667 is a wasteful number, since it uses less digits than its factorization.

42191735667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14063911892.

The product of its digits is 1905120, while the sum is 51.

The spelling of 42191735667 in words is "forty-two billion, one hundred ninety-one million, seven hundred thirty-five thousand, six hundred sixty-seven".