65663704423 has 2 divisors, whose sum is σ = 65663704424. Its totient is φ = 65663704422.

The previous prime is 65663704369. The next prime is 65663704439. The reversal of 65663704423 is 32440736656.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65663704423 is a prime.

It is a super-2 number, since 2×65663704423² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65663704523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831852211 + 32831852212.

It is an arithmetic number, because the mean of its divisors is an integer number (32831852212).

Almost surely, 2^65663704423 is an apocalyptic number.

65663704423 is a deficient number, since it is larger than the sum of its proper divisors (1).

65663704423 is an equidigital number, since it uses as much as digits as its factorization.

65663704423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 46.

The spelling of 65663704423 in words is "sixty-five billion, six hundred sixty-three million, seven hundred four thousand, four hundred twenty-three".