2309657734664 has 24 divisors (see below), whose sum is σ = 5037646335390. Its totient is φ = 989853314688.

The previous prime is 2309657734651. The next prime is 2309657734667. The reversal of 2309657734664 is 4664377569032.

It can be written as a sum of positive squares in only one way, i.e., 1768341444100 + 541316290564 = 1329790^2 + 735742^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2309657734597 and 2309657734606.

It is not an unprimeable number, because it can be changed into a prime (2309657734667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2945991617 + ... + 2945992400.

Almost surely, 2^{2309657734664} is an apocalyptic number.

It is an amenable number.

2309657734664 is an abundant number, since it is smaller than the sum of its proper divisors (2727988600726).

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

2309657734664 is a wasteful number, since it uses less digits than its factorization.

2309657734664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891984037 (or 5891984026 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 62.

The spelling of 2309657734664 in words is "two trillion, three hundred nine billion, six hundred fifty-seven million, seven hundred thirty-four thousand, six hundred sixty-four".