42722926691 has 4 divisors (see below), whose sum is σ = 44971501800. Its totient is φ = 40474351584.

The previous prime is 42722926679. The next prime is 42722926693. The reversal of 42722926691 is 19662922724.

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-42722926691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42722926693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124287526 + ... + 1124287563.

It is an arithmetic number, because the mean of its divisors is an integer number (11242875450).

Almost surely, 2^42722926691 is an apocalyptic number.

42722926691 is a deficient number, since it is larger than the sum of its proper divisors (2248575109).

42722926691 is a wasteful number, since it uses less digits than its factorization.

42722926691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248575108.

The product of its digits is 1306368, while the sum is 50.

The spelling of 42722926691 in words is "forty-two billion, seven hundred twenty-two million, nine hundred twenty-six thousand, six hundred ninety-one".