12634578406384 has 20 divisors (see below), whose sum is σ = 26704904359320. Its totient is φ = 5742990184640.

The previous prime is 12634578406361. The next prime is 12634578406391. The reversal of 12634578406384 is 48360487543621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35893688479 + ... + 35893688830.

It is an arithmetic number, because the mean of its divisors is an integer number (1335245217966).

Almost surely, 2^{12634578406384} is an apocalyptic number.

It is an amenable number.

12634578406384 is an abundant number, since it is smaller than the sum of its proper divisors (14070325952936).

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

12634578406384 is a wasteful number, since it uses less digits than its factorization.

12634578406384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71787377328 (or 71787377322 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 61.

The spelling of 12634578406384 in words is "twelve trillion, six hundred thirty-four billion, five hundred seventy-eight million, four hundred six thousand, three hundred eighty-four".