12513836412 has 144 divisors (see below), whose sum is σ = 41152430592. Its totient is φ = 3109011840.

The previous prime is 12513836383. The next prime is 12513836437. The reversal of 12513836412 is 21463831521.

12513836412 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 3 + 8 + 3 + 641 + 2 = 666.

It is a super-2 number, since 2×12513836412² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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, 34383 + ... + 161894.

It is an arithmetic number, because the mean of its divisors is an integer number (285780768).

Almost surely, 2^12513836412 is an apocalyptic number.

12513836412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12513836412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20576215296).

12513836412 is an abundant number, since it is smaller than the sum of its proper divisors (28638594180).

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

12513836412 is a wasteful number, since it uses less digits than its factorization.

12513836412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196328 (or 196323 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 12513836412 in words is "twelve billion, five hundred thirteen million, eight hundred thirty-six thousand, four hundred twelve".