309808664075 has 6 divisors (see below), whose sum is σ = 384162743484. Its totient is φ = 247846931240.

The previous prime is 309808664029. The next prime is 309808664131. The reversal of 309808664075 is 570466808903.

It is not a de Polignac number, because 309808664075 - 2²⁰ = 309807615499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 309808664075.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6196173257 + ... + 6196173306.

It is an arithmetic number, because the mean of its divisors is an integer number (64027123914).

Almost surely, 2^309808664075 is an apocalyptic number.

309808664075 is a deficient number, since it is larger than the sum of its proper divisors (74354079409).

309808664075 is a wasteful number, since it uses less digits than its factorization.

309808664075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12392346573 (or 12392346568 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 309808664075 in words is "three hundred nine billion, eight hundred eight million, six hundred sixty-four thousand, seventy-five".