13728029865 has 16 divisors (see below), whose sum is σ = 23961652416. Its totient is φ = 6656014400.

The previous prime is 13728029837. The next prime is 13728029869. The reversal of 13728029865 is 56892082731.

It is not a de Polignac number, because 13728029865 - 2⁹ = 13728029353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13728029869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41599926 + ... + 41600255.

It is an arithmetic number, because the mean of its divisors is an integer number (1497603276).

Almost surely, 2^13728029865 is an apocalyptic number.

13728029865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13728029865 is a deficient number, since it is larger than the sum of its proper divisors (10233622551).

13728029865 is a wasteful number, since it uses less digits than its factorization.

13728029865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83200200.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 13728029865 in words is "thirteen billion, seven hundred twenty-eight million, twenty-nine thousand, eight hundred sixty-five".