12915415135986 has 96 divisors (see below), whose sum is σ = 28679247664704. Its totient is φ = 3874259664000.

The previous prime is 12915415135939. The next prime is 12915415135993. The reversal of 12915415135986 is 68953151451921.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 463186401 + ... + 463214283.

It is an arithmetic number, because the mean of its divisors is an integer number (298742163174).

Almost surely, 2^{12915415135986} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12915415135986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14339623832352).

12915415135986 is an abundant number, since it is smaller than the sum of its proper divisors (15763832528718).

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

12915415135986 is a wasteful number, since it uses less digits than its factorization.

12915415135986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34328 (or 34317 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 60.

The spelling of 12915415135986 in words is "twelve trillion, nine hundred fifteen billion, four hundred fifteen million, one hundred thirty-five thousand, nine hundred eighty-six".