65399685103 has 2 divisors, whose sum is σ = 65399685104. Its totient is φ = 65399685102.

The previous prime is 65399685061. The next prime is 65399685121. The reversal of 65399685103 is 30158699356.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65399685103 - 2²⁵ = 65366130671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65399685203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32699842551 + 32699842552.

It is an arithmetic number, because the mean of its divisors is an integer number (32699842552).

Almost surely, 2^65399685103 is an apocalyptic number.

65399685103 is a deficient number, since it is larger than the sum of its proper divisors (1).

65399685103 is an equidigital number, since it uses as much as digits as its factorization.

65399685103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 65399685103 in words is "sixty-five billion, three hundred ninety-nine million, six hundred eighty-five thousand, one hundred three".