12729074652 has 72 divisors (see below), whose sum is σ = 37396195200. Its totient is φ = 3575232288.

The previous prime is 12729074651. The next prime is 12729074669. The reversal of 12729074652 is 25647092721.

It is a super-2 number, since 2×12729074652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12729074598 and 12729074607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729074651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413202 + ... + 442937.

It is an arithmetic number, because the mean of its divisors is an integer number (519391600).

Almost surely, 2^12729074652 is an apocalyptic number.

12729074652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12729074652 is an abundant number, since it is smaller than the sum of its proper divisors (24667120548).

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

12729074652 is a wasteful number, since it uses less digits than its factorization.

12729074652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856215 (or 856210 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 12729074652 in words is "twelve billion, seven hundred twenty-nine million, seventy-four thousand, six hundred fifty-two".