12938287585685 has 16 divisors (see below), whose sum is σ = 19357022466432. Its totient is φ = 8065426027200.

The previous prime is 12938287585681. The next prime is 12938287585787. The reversal of 12938287585685 is 58658578283921.

It is not a de Polignac number, because 12938287585685 - 2² = 12938287585681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (77).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938287585681) 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, 16802970506 + ... + 16802971275.

It is an arithmetic number, because the mean of its divisors is an integer number (1209813904152).

Almost surely, 2^{12938287585685} is an apocalyptic number.

It is an amenable number.

12938287585685 is a deficient number, since it is larger than the sum of its proper divisors (6418734880747).

12938287585685 is a wasteful number, since it uses less digits than its factorization.

12938287585685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33605941804.

The product of its digits is 2322432000, while the sum is 77.

The spelling of 12938287585685 in words is "twelve trillion, nine hundred thirty-eight billion, two hundred eighty-seven million, five hundred eighty-five thousand, six hundred eighty-five".