72573989955 has 8 divisors (see below), whose sum is σ = 116118383952. Its totient is φ = 38706127968.

The previous prime is 72573989951. The next prime is 72573990007. The reversal of 72573989955 is 55998937527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72573989955 - 2² = 72573989951 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72573989955.

It is not an unprimeable number, because it can be changed into a prime (72573989951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2419132984 + ... + 2419133013.

It is an arithmetic number, because the mean of its divisors is an integer number (14514797994).

Almost surely, 2^72573989955 is an apocalyptic number.

72573989955 is a deficient number, since it is larger than the sum of its proper divisors (43544393997).

72573989955 is a wasteful number, since it uses less digits than its factorization.

72573989955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838266005.

The product of its digits is 214326000, while the sum is 69.

The spelling of 72573989955 in words is "seventy-two billion, five hundred seventy-three million, nine hundred eighty-nine thousand, nine hundred fifty-five".