216880501818004 has 12 divisors (see below), whose sum is σ = 379606896812500. Its totient is φ = 108421388443008.

The previous prime is 216880501817927. The next prime is 216880501818007. The reversal of 216880501818004 is 400818105088612.

It can be written as a sum of positive squares in 2 ways, for example, as 55319827552900 + 161560674265104 = 7437730^2 + 12710652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216880501818007) 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 3 ways as a sum of consecutive naturals, for example, 4715590629 + ... + 4715636620.

Almost surely, 2^{216880501818004} is an apocalyptic number.

It is an amenable number.

216880501818004 is a deficient number, since it is larger than the sum of its proper divisors (162726394994496).

216880501818004 is a wasteful number, since it uses less digits than its factorization.

216880501818004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9431233002 (or 9431233000 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 52.

The spelling of 216880501818004 in words is "two hundred sixteen trillion, eight hundred eighty billion, five hundred one million, eight hundred eighteen thousand, four".