13009671756 has 18 divisors (see below), whose sum is σ = 32885559252. Its totient is φ = 4336557240.

The previous prime is 13009671751. The next prime is 13009671781. The reversal of 13009671756 is 65717690031.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (13009671751) 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 5 ways as a sum of consecutive naturals, for example, 180689850 + ... + 180689921.

It is an arithmetic number, because the mean of its divisors is an integer number (1826975514).

Almost surely, 2^13009671756 is an apocalyptic number.

It is an amenable number.

13009671756 is an abundant number, since it is smaller than the sum of its proper divisors (19875887496).

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

13009671756 is a wasteful number, since it uses less digits than its factorization.

13009671756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361379781 (or 361379776 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 13009671756 in words is "thirteen billion, nine million, six hundred seventy-one thousand, seven hundred fifty-six".