13465177728 has 32 divisors (see below), whose sum is σ = 35766879360. Its totient is φ = 4488392448.

The previous prime is 13465177727. The next prime is 13465177757. The reversal of 13465177728 is 82777156431.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×13465177728² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13465177723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17532400 + ... + 17533167.

It is an arithmetic number, because the mean of its divisors is an integer number (1117714980).

Almost surely, 2^13465177728 is an apocalyptic number.

It is an amenable number.

13465177728 is an abundant number, since it is smaller than the sum of its proper divisors (22301701632).

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

13465177728 is an equidigital number, since it uses as much as digits as its factorization.

13465177728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35065584 (or 35065572 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The spelling of 13465177728 in words is "thirteen billion, four hundred sixty-five million, one hundred seventy-seven thousand, seven hundred twenty-eight".