73251254513 has 4 divisors (see below), whose sum is σ = 73411542180. Its totient is φ = 73090966848.

The previous prime is 73251254509. The next prime is 73251254537. The reversal of 73251254513 is 31545215237.

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 52689988849 + 20561265664 = 229543^2 + 143392^2 .

It is a cyclic number.

It is not a de Polignac number, because 73251254513 - 2² = 73251254509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73251254543) 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 3 ways as a sum of consecutive naturals, for example, 80143148 + ... + 80144061.

It is an arithmetic number, because the mean of its divisors is an integer number (18352885545).

Almost surely, 2^73251254513 is an apocalyptic number.

It is an amenable number.

73251254513 is a deficient number, since it is larger than the sum of its proper divisors (160287667).

73251254513 is a wasteful number, since it uses less digits than its factorization.

73251254513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160287666.

The product of its digits is 126000, while the sum is 38.

The spelling of 73251254513 in words is "seventy-three billion, two hundred fifty-one million, two hundred fifty-four thousand, five hundred thirteen".