13125172919 has 2 divisors, whose sum is σ = 13125172920. Its totient is φ = 13125172918.

The previous prime is 13125172913. The next prime is 13125172943. The reversal of 13125172919 is 91927152131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13125172919 - 2⁴ = 13125172903 is a prime.

It is a super-2 number, since 2×13125172919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13125172913) 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 as a sum of consecutive naturals, namely, 6562586459 + 6562586460.

It is an arithmetic number, because the mean of its divisors is an integer number (6562586460).

Almost surely, 2^13125172919 is an apocalyptic number.

13125172919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125172919 is an equidigital number, since it uses as much as digits as its factorization.

13125172919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 41.

The spelling of 13125172919 in words is "thirteen billion, one hundred twenty-five million, one hundred seventy-two thousand, nine hundred nineteen".