181048216777 has 16 divisors (see below), whose sum is σ = 189614161152. Its totient is φ = 172540653120.

The previous prime is 181048216711. The next prime is 181048216781. The reversal of 181048216777 is 777612840181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181048216777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181048211777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20860963 + ... + 20869639.

It is an arithmetic number, because the mean of its divisors is an integer number (11850885072).

Almost surely, 2^181048216777 is an apocalyptic number.

It is an amenable number.

181048216777 is a deficient number, since it is larger than the sum of its proper divisors (8565944375).

181048216777 is a wasteful number, since it uses less digits than its factorization.

181048216777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11928.

The product of its (nonzero) digits is 1053696, while the sum is 52.

The spelling of 181048216777 in words is "one hundred eighty-one billion, forty-eight million, two hundred sixteen thousand, seven hundred seventy-seven".