42722688990769 has 2 divisors, whose sum is σ = 42722688990770. Its totient is φ = 42722688990768.

The previous prime is 42722688990757. The next prime is 42722688990799. The reversal of 42722688990769 is 96709988622724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34729063700769 + 7993625290000 = 5893137^2 + 2827300^2 .

It is a cyclic number.

It is not a de Polignac number, because 42722688990769 - 2²⁵ = 42722655436337 is a prime.

It is a super-2 number, since 2×42722688990769² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42722688990799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361344495384 + 21361344495385.

It is an arithmetic number, because the mean of its divisors is an integer number (21361344495385).

Almost surely, 2^{42722688990769} is an apocalyptic number.

It is an amenable number.

42722688990769 is a deficient number, since it is larger than the sum of its proper divisors (1).

42722688990769 is an equidigital number, since it uses as much as digits as its factorization.

42722688990769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2633637888, while the sum is 79.

The spelling of 42722688990769 in words is "forty-two trillion, seven hundred twenty-two billion, six hundred eighty-eight million, nine hundred ninety thousand, seven hundred sixty-nine".