13145123549 has 8 divisors (see below), whose sum is σ = 13180614720. Its totient is φ = 13109656896.

The previous prime is 13145123543. The next prime is 13145123587. The reversal of 13145123549 is 94532154131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13145123549 - 2⁸ = 13145123293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145123543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627082 + ... + 1635140.

It is an arithmetic number, because the mean of its divisors is an integer number (1647576840).

Almost surely, 2^13145123549 is an apocalyptic number.

It is an amenable number.

13145123549 is a deficient number, since it is larger than the sum of its proper divisors (35491171).

13145123549 is an equidigital number, since it uses as much as digits as its factorization.

13145123549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12259.

The product of its digits is 64800, while the sum is 38.

The spelling of 13145123549 in words is "thirteen billion, one hundred forty-five million, one hundred twenty-three thousand, five hundred forty-nine".