13415728729 has 8 divisors (see below), whose sum is σ = 14630591360. Its totient is φ = 12226992336.

The previous prime is 13415728691. The next prime is 13415728757. The reversal of 13415728729 is 92782751431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13415728729 is a prime.

It is a super-3 number, since 3×13415728729³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13415728759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6530487 + ... + 6532540.

It is an arithmetic number, because the mean of its divisors is an integer number (1828823920).

Almost surely, 2^13415728729 is an apocalyptic number.

It is an amenable number.

13415728729 is a deficient number, since it is larger than the sum of its proper divisors (1214862631).

13415728729 is a wasteful number, since it uses less digits than its factorization.

13415728729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063119.

The product of its digits is 846720, while the sum is 49.

The spelling of 13415728729 in words is "thirteen billion, four hundred fifteen million, seven hundred twenty-eight thousand, seven hundred twenty-nine".