65181916769 has 2 divisors, whose sum is σ = 65181916770. Its totient is φ = 65181916768.

The previous prime is 65181916711. The next prime is 65181916829. The reversal of 65181916769 is 96761918156.

65181916769 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., 64789084369 + 392832400 = 254537^2 + 19820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65181916769 is a prime.

It is a super-2 number, since 2×65181916769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65181916669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32590958384 + 32590958385.

It is an arithmetic number, because the mean of its divisors is an integer number (32590958385).

Almost surely, 2^65181916769 is an apocalyptic number.

It is an amenable number.

65181916769 is a deficient number, since it is larger than the sum of its proper divisors (1).

65181916769 is an equidigital number, since it uses as much as digits as its factorization.

65181916769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 59.

The spelling of 65181916769 in words is "sixty-five billion, one hundred eighty-one million, nine hundred sixteen thousand, seven hundred sixty-nine".