724445345475253 has 4 divisors (see below), whose sum is σ = 724445448227820. Its totient is φ = 724445242722688.

The previous prime is 724445345475239. The next prime is 724445345475433. The reversal of 724445345475253 is 352574543544427.

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 570812468789124 + 153632876686129 = 23891682^2 + 12394873^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724445345475253 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 (724445345475223) 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, 39954250 + ... + 55183627.

It is an arithmetic number, because the mean of its divisors is an integer number (181111362056955).

Almost surely, 2^{724445345475253} is an apocalyptic number.

It is an amenable number.

724445345475253 is a deficient number, since it is larger than the sum of its proper divisors (102752567).

724445345475253 is an equidigital number, since it uses as much as digits as its factorization.

724445345475253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102752566.

The product of its digits is 1128960000, while the sum is 64.

The spelling of 724445345475253 in words is "seven hundred twenty-four trillion, four hundred forty-five billion, three hundred forty-five million, four hundred seventy-five thousand, two hundred fifty-three".