18701717053516 has 24 divisors (see below), whose sum is σ = 39603636114336. Its totient is φ = 7543549735680.

The previous prime is 18701717053351. The next prime is 18701717053531. The reversal of 18701717053516 is 61535071710781.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19644660295 + ... + 19644661246.

It is an arithmetic number, because the mean of its divisors is an integer number (1650151504764).

Almost surely, 2^{18701717053516} is an apocalyptic number.

It is an amenable number.

18701717053516 is an abundant number, since it is smaller than the sum of its proper divisors (20901919060820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18701717053516 is a wasteful number, since it uses less digits than its factorization.

18701717053516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39289321569 (or 39289321567 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 52.

The spelling of 18701717053516 in words is "eighteen trillion, seven hundred one billion, seven hundred seventeen million, fifty-three thousand, five hundred sixteen".