72229286573 has 4 divisors (see below), whose sum is σ = 72279833340. Its totient is φ = 72178739808.

The previous prime is 72229286567. The next prime is 72229286587. The reversal of 72229286573 is 37568292227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3704183044 + 68525103529 = 60862^2 + 261773^2 .

It is a cyclic number.

It is not a de Polignac number, because 72229286573 - 2⁸ = 72229286317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72229286873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25271240 + ... + 25274097.

It is an arithmetic number, because the mean of its divisors is an integer number (18069958335).

Almost surely, 2^72229286573 is an apocalyptic number.

It is an amenable number.

72229286573 is a deficient number, since it is larger than the sum of its proper divisors (50546767).

72229286573 is a wasteful number, since it uses less digits than its factorization.

72229286573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50546766.

The product of its digits is 5080320, while the sum is 53.

The spelling of 72229286573 in words is "seventy-two billion, two hundred twenty-nine million, two hundred eighty-six thousand, five hundred seventy-three".