72730408611 has 32 divisors (see below), whose sum is σ = 111189431808. Its totient is φ = 41424641280.

The previous prime is 72730408573. The next prime is 72730408613. The reversal of 72730408611 is 11680403727.

It is not a de Polignac number, because 72730408611 - 2⁷ = 72730408483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72730408611.

It is not an unprimeable number, because it can be changed into a prime (72730408613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9930831 + ... + 9938151.

It is an arithmetic number, because the mean of its divisors is an integer number (3474669744).

Almost surely, 2^72730408611 is an apocalyptic number.

72730408611 is a deficient number, since it is larger than the sum of its proper divisors (38459023197).

72730408611 is a wasteful number, since it uses less digits than its factorization.

72730408611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8811.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 72730408611 in words is "seventy-two billion, seven hundred thirty million, four hundred eight thousand, six hundred eleven".