2309798385872 has 20 divisors (see below), whose sum is σ = 4538265844896. Its totient is φ = 1138633006560.

The previous prime is 2309798385859. The next prime is 2309798385889. The reversal of 2309798385872 is 2785838979032.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a junction number, because it is equal to n+sod(n) for n = 2309798385796 and 2309798385805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016635478 + ... + 1016637749.

Almost surely, 2^{2309798385872} is an apocalyptic number.

It is an amenable number.

2309798385872 is a deficient number, since it is larger than the sum of its proper divisors (2228467459024).

2309798385872 is a wasteful number, since it uses less digits than its factorization.

2309798385872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033273306 (or 2033273300 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 71.

The spelling of 2309798385872 in words is "two trillion, three hundred nine billion, seven hundred ninety-eight million, three hundred eighty-five thousand, eight hundred seventy-two".