1078742722769 has 2 divisors, whose sum is σ = 1078742722770. Its totient is φ = 1078742722768.

The previous prime is 1078742722747. The next prime is 1078742722823. The reversal of 1078742722769 is 9672272478701.

1078742722769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573939577744 + 504803145025 = 757588^2 + 710495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078742722769 - 2¹² = 1078742718673 is a prime.

It is a super-3 number, since 3×1078742722769³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1078742722069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539371361384 + 539371361385.

It is an arithmetic number, because the mean of its divisors is an integer number (539371361385).

Almost surely, 2^{1078742722769} is an apocalyptic number.

It is an amenable number.

1078742722769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078742722769 is an equidigital number, since it uses as much as digits as its factorization.

1078742722769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33191424, while the sum is 62.

The spelling of 1078742722769 in words is "one trillion, seventy-eight billion, seven hundred forty-two million, seven hundred twenty-two thousand, seven hundred sixty-nine".