13125109072 has 20 divisors (see below), whose sum is σ = 26306792820. Its totient is φ = 6336259328.

The previous prime is 13125109069. The next prime is 13125109079. The reversal of 13125109072 is 27090152131.

It can be written as a sum of positive squares in 2 ways, for example, as 11091459856 + 2033649216 = 105316^2 + 45096^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125109079) 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, 14142973 + ... + 14143900.

It is an arithmetic number, because the mean of its divisors is an integer number (1315339641).

Almost surely, 2^13125109072 is an apocalyptic number.

It is an amenable number.

13125109072 is an abundant number, since it is smaller than the sum of its proper divisors (13181683748).

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

13125109072 is a wasteful number, since it uses less digits than its factorization.

13125109072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28286910 (or 28286904 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The spelling of 13125109072 in words is "thirteen billion, one hundred twenty-five million, one hundred nine thousand, seventy-two".