42722919517 has 2 divisors, whose sum is σ = 42722919518. Its totient is φ = 42722919516.

The previous prime is 42722919479. The next prime is 42722919523. The reversal of 42722919517 is 71591922724.

42722919517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22120910361 + 20602009156 = 148731^2 + 143534^2 .

It is a cyclic number.

It is not a de Polignac number, because 42722919517 - 2¹¹ = 42722917469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42722919527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361459758 + 21361459759.

It is an arithmetic number, because the mean of its divisors is an integer number (21361459759).

Almost surely, 2^42722919517 is an apocalyptic number.

It is an amenable number.

42722919517 is a deficient number, since it is larger than the sum of its proper divisors (1).

42722919517 is an equidigital number, since it uses as much as digits as its factorization.

42722919517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The spelling of 42722919517 in words is "forty-two billion, seven hundred twenty-two million, nine hundred nineteen thousand, five hundred seventeen".