65107985623 has 2 divisors, whose sum is σ = 65107985624. Its totient is φ = 65107985622.

The previous prime is 65107985617. The next prime is 65107985639. The reversal of 65107985623 is 32658970156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65107985623 - 2²⁹ = 64571114711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65107985023) 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, 32553992811 + 32553992812.

It is an arithmetic number, because the mean of its divisors is an integer number (32553992812).

Almost surely, 2^65107985623 is an apocalyptic number.

65107985623 is a deficient number, since it is larger than the sum of its proper divisors (1).

65107985623 is an equidigital number, since it uses as much as digits as its factorization.

65107985623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 65107985623 in words is "sixty-five billion, one hundred seven million, nine hundred eighty-five thousand, six hundred twenty-three".