18641516966 has 8 divisors (see below), whose sum is σ = 27963104664. Its totient is φ = 9320482080.

The previous prime is 18641516953. The next prime is 18641516977. The reversal of 18641516966 is 66961514681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39920 + ... + 197171.

It is an arithmetic number, because the mean of its divisors is an integer number (3495388083).

Almost surely, 2^18641516966 is an apocalyptic number.

18641516966 is a deficient number, since it is larger than the sum of its proper divisors (9321587698).

18641516966 is a wasteful number, since it uses less digits than its factorization.

18641516966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276406.

The product of its digits is 1866240, while the sum is 53.

The spelling of 18641516966 in words is "eighteen billion, six hundred forty-one million, five hundred sixteen thousand, nine hundred sixty-six".