65115619823 has 2 divisors, whose sum is σ = 65115619824. Its totient is φ = 65115619822.

The previous prime is 65115619781. The next prime is 65115619831. The reversal of 65115619823 is 32891651156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65115619823 - 2¹² = 65115615727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65115619873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32557809911 + 32557809912.

It is an arithmetic number, because the mean of its divisors is an integer number (32557809912).

Almost surely, 2^65115619823 is an apocalyptic number.

65115619823 is a deficient number, since it is larger than the sum of its proper divisors (1).

65115619823 is an equidigital number, since it uses as much as digits as its factorization.

65115619823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The spelling of 65115619823 in words is "sixty-five billion, one hundred fifteen million, six hundred nineteen thousand, eight hundred twenty-three".