72735453191 has 4 divisors (see below), whose sum is σ = 73047622752. Its totient is φ = 72423283632.

The previous prime is 72735453157. The next prime is 72735453227. The reversal of 72735453191 is 19135453727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72735453191 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 (72735452191) 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, 156084431 + ... + 156084896.

It is an arithmetic number, because the mean of its divisors is an integer number (18261905688).

Almost surely, 2^72735453191 is an apocalyptic number.

72735453191 is a deficient number, since it is larger than the sum of its proper divisors (312169561).

72735453191 is a wasteful number, since it uses less digits than its factorization.

72735453191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312169560.

The product of its digits is 793800, while the sum is 47.

The spelling of 72735453191 in words is "seventy-two billion, seven hundred thirty-five million, four hundred fifty-three thousand, one hundred ninety-one".