7543721273 has 8 divisors (see below), whose sum is σ = 8230296576. Its totient is φ = 6857276400.

The previous prime is 7543721267. The next prime is 7543721279. The reversal of 7543721273 is 3721273457.

It is an interprime number because it is at equal distance from previous prime (7543721267) and next prime (7543721279).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7543721273 - 2¹⁶ = 7543655737 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 7543721273.

It is not an unprimeable number, because it can be changed into a prime (7543721279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119003 + ... + 171023.

It is an arithmetic number, because the mean of its divisors is an integer number (1028787072).

Almost surely, 2^7543721273 is an apocalyptic number.

It is an amenable number.

7543721273 is a deficient number, since it is larger than the sum of its proper divisors (686575303).

7543721273 is a wasteful number, since it uses less digits than its factorization.

7543721273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65215.

The product of its digits is 246960, while the sum is 41.

The square root of 7543721273 is about 86854.5984562706. The cubic root of 7543721273 is about 1961.2300755063.

The spelling of 7543721273 in words is "seven billion, five hundred forty-three million, seven hundred twenty-one thousand, two hundred seventy-three".