309242047968 has 192 divisors, whose sum is σ = 1091442885120. Its totient is φ = 83157497856.

The previous prime is 309242047963. The next prime is 309242047969. The reversal of 309242047968 is 869740242903.

309242047968 is a `hidden beast` number, since 3 + 0 + 92 + 4 + 20 + 479 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309242047963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1401046 + ... + 1606677.

It is an arithmetic number, because the mean of its divisors is an integer number (5684598360).

Almost surely, 2^309242047968 is an apocalyptic number.

It is an amenable number.

309242047968 is an abundant number, since it is smaller than the sum of its proper divisors (782200837152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309242047968 is a wasteful number, since it uses less digits than its factorization.

309242047968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007766 (or 3007752 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 309242047968 in words is "three hundred nine billion, two hundred forty-two million, forty-seven thousand, nine hundred sixty-eight".