716623066509 has 48 divisors (see below), whose sum is σ = 1113966120960. Its totient is φ = 408590364000.

The previous prime is 716623066499. The next prime is 716623066531. The reversal of 716623066509 is 905660326617.

It is a happy number.

It is not a de Polignac number, because 716623066509 - 2⁹ = 716623065997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716623066109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150833884 + ... + 150838634.

It is an arithmetic number, because the mean of its divisors is an integer number (23207627520).

Almost surely, 2^716623066509 is an apocalyptic number.

It is an amenable number.

716623066509 is a deficient number, since it is larger than the sum of its proper divisors (397343054451).

716623066509 is a wasteful number, since it uses less digits than its factorization.

716623066509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830 (or 6823 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 716623066509 in words is "seven hundred sixteen billion, six hundred twenty-three million, sixty-six thousand, five hundred nine".