2166508745716 has 24 divisors (see below), whose sum is σ = 4338061797440. Its totient is φ = 927422825472.

The previous prime is 2166508745707. The next prime is 2166508745783. The reversal of 2166508745716 is 6175478056612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45013965 + ... + 45062068.

Almost surely, 2^{2166508745716} is an apocalyptic number.

It is an amenable number.

2166508745716 is an abundant number, since it is smaller than the sum of its proper divisors (2171553051724).

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

2166508745716 is a wasteful number, since it uses less digits than its factorization.

2166508745716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90076903 (or 90076901 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 2166508745716 in words is "two trillion, one hundred sixty-six billion, five hundred eight million, seven hundred forty-five thousand, seven hundred sixteen".