72538588223444 has 48 divisors (see below), whose sum is σ = 145171890178560. Its totient is φ = 31067674813920.

The previous prime is 72538588223443. The next prime is 72538588223473. The reversal of 72538588223444 is 44432288583527.

72538588223444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×72538588223444² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72538588223443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436215587 + ... + 436381845.

It is an arithmetic number, because the mean of its divisors is an integer number (3024414378720).

Almost surely, 2^{72538588223444} is an apocalyptic number.

It is an amenable number.

72538588223444 is an abundant number, since it is smaller than the sum of its proper divisors (72633301955116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72538588223444 is a wasteful number, since it uses less digits than its factorization.

72538588223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176348 (or 176346 counting only the distinct ones).

The product of its digits is 412876800, while the sum is 65.

The spelling of 72538588223444 in words is "seventy-two trillion, five hundred thirty-eight billion, five hundred eighty-eight million, two hundred twenty-three thousand, four hundred forty-four".