309412605616 has 20 divisors (see below), whose sum is σ = 612241965792. Its totient is φ = 151414678976.

The previous prime is 309412605599. The next prime is 309412605641. The reversal of 309412605616 is 616506214903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205725715 + ... + 205727218.

Almost surely, 2^309412605616 is an apocalyptic number.

It is an amenable number.

309412605616 is a deficient number, since it is larger than the sum of its proper divisors (302829360176).

309412605616 is a wasteful number, since it uses less digits than its factorization.

309412605616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411452988 (or 411452982 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 309412605616 in words is "three hundred nine billion, four hundred twelve million, six hundred five thousand, six hundred sixteen".