127273563645 has 16 divisors (see below), whose sum is σ = 203837567040. Its totient is φ = 67812612224.

The previous prime is 127273563611. The next prime is 127273563653. The reversal of 127273563645 is 546365372721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 127273563645 - 2⁶ = 127273563581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4148064 + ... + 4178633.

It is an arithmetic number, because the mean of its divisors is an integer number (12739847940).

Almost surely, 2^127273563645 is an apocalyptic number.

127273563645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127273563645 is a deficient number, since it is larger than the sum of its proper divisors (76564003395).

127273563645 is a wasteful number, since it uses less digits than its factorization.

127273563645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8327724.

The product of its digits is 6350400, while the sum is 51.

The spelling of 127273563645 in words is "one hundred twenty-seven billion, two hundred seventy-three million, five hundred sixty-three thousand, six hundred forty-five".