72574204816 has 15 divisors (see below), whose sum is σ = 140614609681. Its totient is φ = 36286563616.

The previous prime is 72574204789. The next prime is 72574204817. The reversal of 72574204816 is 61840247527.

The square root of 72574204816 is 269396.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 72554809600 = 4404^2 + 269360^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72574204817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1043910 + ... + 1111258.

Almost surely, 2^72574204816 is an apocalyptic number.

72574204816 is the 269396-th square number.

It is an amenable number.

72574204816 is a deficient number, since it is larger than the sum of its proper divisors (68040404865).

72574204816 is an frugal number, since it uses more digits than its factorization.

72574204816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134706 (or 67351 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 72574204816 in words is "seventy-two billion, five hundred seventy-four million, two hundred four thousand, eight hundred sixteen".