42722822717 has 2 divisors, whose sum is σ = 42722822718. Its totient is φ = 42722822716.

The previous prime is 42722822693. The next prime is 42722822729. The reversal of 42722822717 is 71722822724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37662776761 + 5060045956 = 194069^2 + 71134^2 .

It is a cyclic number.

It is not a de Polignac number, because 42722822717 - 2²⁰ = 42721774141 is a prime.

It is a super-2 number, since 2×42722822717² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42722822777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361411358 + 21361411359.

It is an arithmetic number, because the mean of its divisors is an integer number (21361411359).

Almost surely, 2^42722822717 is an apocalyptic number.

It is an amenable number.

42722822717 is a deficient number, since it is larger than the sum of its proper divisors (1).

42722822717 is an equidigital number, since it uses as much as digits as its factorization.

42722822717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 351232, while the sum is 44.

The spelling of 42722822717 in words is "forty-two billion, seven hundred twenty-two million, eight hundred twenty-two thousand, seven hundred seventeen".