13145123551 has 16 divisors (see below), whose sum is σ = 15347865600. Its totient is φ = 11026124928.

The previous prime is 13145123543. The next prime is 13145123587. The reversal of 13145123551 is 15532154131.

It is not a de Polignac number, because 13145123551 - 2³ = 13145123543 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 (13145123501) 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 15 ways as a sum of consecutive naturals, for example, 42691 + ... + 167668.

It is an arithmetic number, because the mean of its divisors is an integer number (959241600).

Almost surely, 2^13145123551 is an apocalyptic number.

13145123551 is a deficient number, since it is larger than the sum of its proper divisors (2202742049).

13145123551 is a wasteful number, since it uses less digits than its factorization.

13145123551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210558.

The product of its digits is 9000, while the sum is 31.

Adding to 13145123551 its reverse (15532154131), we get a palindrome (28677277682).

The spelling of 13145123551 in words is "thirteen billion, one hundred forty-five million, one hundred twenty-three thousand, five hundred fifty-one".