72550475255643 has 64 divisors (see below), whose sum is σ = 123853032059904. Its totient is φ = 36677629440000.

The previous prime is 72550475255641. The next prime is 72550475255719. The reversal of 72550475255643 is 34655257405527.

It is not a de Polignac number, because 72550475255643 - 2¹ = 72550475255641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72550475255641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5753596 + ... + 13349337.

It is an arithmetic number, because the mean of its divisors is an integer number (1935203625936).

Almost surely, 2^{72550475255643} is an apocalyptic number.

72550475255643 is a deficient number, since it is larger than the sum of its proper divisors (51302556804261).

72550475255643 is a wasteful number, since it uses less digits than its factorization.

72550475255643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19103396.

The product of its (nonzero) digits is 176400000, while the sum is 60.

The spelling of 72550475255643 in words is "seventy-two trillion, five hundred fifty billion, four hundred seventy-five million, two hundred fifty-five thousand, six hundred forty-three".