909745680869 has 2 divisors, whose sum is σ = 909745680870. Its totient is φ = 909745680868.

The previous prime is 909745680847. The next prime is 909745680929. The reversal of 909745680869 is 968086547909.

909745680869 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., 482177472100 + 427568208769 = 694390^2 + 653887^2 .

It is a cyclic number.

It is not a de Polignac number, because 909745680869 - 2¹² = 909745676773 is a prime.

It is a super-2 number, since 2×909745680869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909745685869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454872840434 + 454872840435.

It is an arithmetic number, because the mean of its divisors is an integer number (454872840435).

Almost surely, 2^909745680869 is an apocalyptic number.

It is an amenable number.

909745680869 is a deficient number, since it is larger than the sum of its proper divisors (1).

909745680869 is an equidigital number, since it uses as much as digits as its factorization.

909745680869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235146240, while the sum is 71.

The spelling of 909745680869 in words is "nine hundred nine billion, seven hundred forty-five million, six hundred eighty thousand, eight hundred sixty-nine".