65181916829 has 2 divisors, whose sum is σ = 65181916830. Its totient is φ = 65181916828.

The previous prime is 65181916769. The next prime is 65181916831. The reversal of 65181916829 is 92861918156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65179111204 + 2805625 = 255302^2 + 1675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65181916829 is a prime.

Together with 65181916831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65181916859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32590958414 + 32590958415.

It is an arithmetic number, because the mean of its divisors is an integer number (32590958415).

Almost surely, 2^65181916829 is an apocalyptic number.

It is an amenable number.

65181916829 is a deficient number, since it is larger than the sum of its proper divisors (1).

65181916829 is an equidigital number, since it uses as much as digits as its factorization.

65181916829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 56.

The spelling of 65181916829 in words is "sixty-five billion, one hundred eighty-one million, nine hundred sixteen thousand, eight hundred twenty-nine".