42651732667 has 4 divisors (see below), whose sum is σ = 45160658136. Its totient is φ = 40142807200.

The previous prime is 42651732653. The next prime is 42651732677. The reversal of 42651732667 is 76623715624.

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

It is a de Polignac number, because none of the positive numbers 2^k-42651732667 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42651732667.

It is not an unprimeable number, because it can be changed into a prime (42651732677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254462709 + ... + 1254462742.

It is an arithmetic number, because the mean of its divisors is an integer number (11290164534).

Almost surely, 2^42651732667 is an apocalyptic number.

42651732667 is a deficient number, since it is larger than the sum of its proper divisors (2508925469).

42651732667 is a wasteful number, since it uses less digits than its factorization.

42651732667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508925468.

The product of its digits is 2540160, while the sum is 49.

The spelling of 42651732667 in words is "forty-two billion, six hundred fifty-one million, seven hundred thirty-two thousand, six hundred sixty-seven".