12128591259645 has 192 divisors, whose sum is σ = 24010935287040. Its totient is φ = 5212629725184.

The previous prime is 12128591259623. The next prime is 12128591259647. The reversal of 12128591259645 is 54695219582121.

It is a happy number.

It is not a de Polignac number, because 12128591259645 - 2¹¹ = 12128591257597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128591259647) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5983517122 + ... + 5983519148.

It is an arithmetic number, because the mean of its divisors is an integer number (125056954620).

Almost surely, 2^{12128591259645} is an apocalyptic number.

12128591259645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12128591259645 is a deficient number, since it is larger than the sum of its proper divisors (11882344027395).

12128591259645 is a wasteful number, since it uses less digits than its factorization.

12128591259645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757 (or 3716 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 60.

The spelling of 12128591259645 in words is "twelve trillion, one hundred twenty-eight billion, five hundred ninety-one million, two hundred fifty-nine thousand, six hundred forty-five".