72128580125752 has 32 divisors (see below), whose sum is σ = 143215497547920. Its totient is φ = 33938345274880.

The previous prime is 72128580125729. The next prime is 72128580125753. The reversal of 72128580125752 is 25752108582127.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72128580125693 and 72128580125702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72128580125753) 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, 34254874 + ... + 36299497.

Almost surely, 2^{72128580125752} is an apocalyptic number.

It is an amenable number.

72128580125752 is a deficient number, since it is larger than the sum of its proper divisors (71086917422168).

72128580125752 is a wasteful number, since it uses less digits than its factorization.

72128580125752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70561911 (or 70561907 counting only the distinct ones).

The product of its (nonzero) digits is 6272000, while the sum is 55.

The spelling of 72128580125752 in words is "seventy-two trillion, one hundred twenty-eight billion, five hundred eighty million, one hundred twenty-five thousand, seven hundred fifty-two".