12361355685438 has 32 divisors (see below), whose sum is σ = 24904588289280. Its totient is φ = 4090148637120.

The previous prime is 12361355685433. The next prime is 12361355685449. The reversal of 12361355685438 is 83458655316321.

It is a super-2 number, since 2×12361355685438² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361355685433) 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, 3992943 + ... + 6377013.

It is an arithmetic number, because the mean of its divisors is an integer number (778268384040).

Almost surely, 2^{12361355685438} is an apocalyptic number.

12361355685438 is an abundant number, since it is smaller than the sum of its proper divisors (12543232603842).

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

12361355685438 is a wasteful number, since it uses less digits than its factorization.

12361355685438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390432.

The product of its digits is 62208000, while the sum is 60.

The spelling of 12361355685438 in words is "twelve trillion, three hundred sixty-one billion, three hundred fifty-five million, six hundred eighty-five thousand, four hundred thirty-eight".