12340005617785 has 16 divisors (see below), whose sum is σ = 14833512864000. Its totient is φ = 9855003666816.

The previous prime is 12340005617761. The next prime is 12340005617789. The reversal of 12340005617785 is 58771650004321.

It is a cyclic number.

It is not a de Polignac number, because 12340005617785 - 2²³ = 12339997229177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12340005617789) 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, 30957376 + ... + 31353454.

It is an arithmetic number, because the mean of its divisors is an integer number (927094554000).

Almost surely, 2^{12340005617785} is an apocalyptic number.

It is an amenable number.

12340005617785 is a deficient number, since it is larger than the sum of its proper divisors (2493507246215).

12340005617785 is a wasteful number, since it uses less digits than its factorization.

12340005617785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406800.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 12340005617785 in words is "twelve trillion, three hundred forty billion, five million, six hundred seventeen thousand, seven hundred eighty-five".