181080283791 has 48 divisors (see below), whose sum is σ = 277169276160. Its totient is φ = 104880864000.

The previous prime is 181080283781. The next prime is 181080283799. The reversal of 181080283791 is 197382080181.

It is a happy number.

It is not a de Polignac number, because 181080283791 - 2¹⁰ = 181080282767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 181080283791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181080283799) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10018120 + ... + 10036178.

It is an arithmetic number, because the mean of its divisors is an integer number (5774359920).

Almost surely, 2^181080283791 is an apocalyptic number.

181080283791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

181080283791 is a deficient number, since it is larger than the sum of its proper divisors (96088992369).

181080283791 is a wasteful number, since it uses less digits than its factorization.

181080283791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19308 (or 19297 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 48.

The spelling of 181080283791 in words is "one hundred eighty-one billion, eighty million, two hundred eighty-three thousand, seven hundred ninety-one".