12929217136 has 20 divisors (see below), whose sum is σ = 27327663864. Its totient is φ = 5876916800.

The previous prime is 12929217131. The next prime is 12929217157. The reversal of 12929217136 is 63171292921.

It is a junction number, because it is equal to n+sod(n) for n = 12929217092 and 12929217101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12929217131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36730555 + ... + 36730906.

Almost surely, 2^12929217136 is an apocalyptic number.

12929217136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12929217136 is an abundant number, since it is smaller than the sum of its proper divisors (14398446728).

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

12929217136 is a wasteful number, since it uses less digits than its factorization.

12929217136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73461480 (or 73461474 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The spelling of 12929217136 in words is "twelve billion, nine hundred twenty-nine million, two hundred seventeen thousand, one hundred thirty-six".