18076080561 has 32 divisors (see below), whose sum is σ = 30285201408. Its totient is φ = 9316218240.

The previous prime is 18076080557. The next prime is 18076080571. The reversal of 18076080561 is 16508067081.

It is not a de Polignac number, because 18076080561 - 2² = 18076080557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18076080541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278740 + ... + 337413.

It is an arithmetic number, because the mean of its divisors is an integer number (946412544).

Almost surely, 2^18076080561 is an apocalyptic number.

18076080561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18076080561 is a deficient number, since it is larger than the sum of its proper divisors (12209120847).

18076080561 is a wasteful number, since it uses less digits than its factorization.

18076080561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616301.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 18076080561 in words is "eighteen billion, seventy-six million, eighty thousand, five hundred sixty-one".