7273513643 has 12 divisors (see below), whose sum is σ = 7998146520. Its totient is φ = 6609562080.

The previous prime is 7273513627. The next prime is 7273513651. The reversal of 7273513643 is 3463153727.

It is not a de Polignac number, because 7273513643 - 2⁴ = 7273513627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7273513643.

It is not an unprimeable number, because it can be changed into a prime (7273513603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319196 + ... + 341222.

It is an arithmetic number, because the mean of its divisors is an integer number (666512210).

Almost surely, 2^7273513643 is an apocalyptic number.

7273513643 is a deficient number, since it is larger than the sum of its proper divisors (724632877).

7273513643 is a wasteful number, since it uses less digits than its factorization.

7273513643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24778 (or 24767 counting only the distinct ones).

The product of its digits is 317520, while the sum is 41.

The square root of 7273513643 is about 85284.8969220225. The cubic root of 7273513643 is about 1937.5284396131.

The spelling of 7273513643 in words is "seven billion, two hundred seventy-three million, five hundred thirteen thousand, six hundred forty-three".