309966193407 has 16 divisors (see below), whose sum is σ = 445106285568. Its totient is φ = 190737016800.

The previous prime is 309966193333. The next prime is 309966193451. The reversal of 309966193407 is 704391669903.

It is not a de Polignac number, because 309966193407 - 2¹⁸ = 309965931263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309966192407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447658 + ... + 905720.

It is an arithmetic number, because the mean of its divisors is an integer number (27819142848).

Almost surely, 2^309966193407 is an apocalyptic number.

309966193407 is a deficient number, since it is larger than the sum of its proper divisors (135140092161).

309966193407 is a wasteful number, since it uses less digits than its factorization.

309966193407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475430.

The product of its (nonzero) digits is 6613488, while the sum is 57.

The spelling of 309966193407 in words is "three hundred nine billion, nine hundred sixty-six million, one hundred ninety-three thousand, four hundred seven".