166216015536 has 60 divisors (see below), whose sum is σ = 453180416472. Its totient is φ = 52489262592.

The previous prime is 166216015501. The next prime is 166216015571. The reversal of 166216015536 is 635510612661.

It is an interprime number because it is at equal distance from previous prime (166216015501) and next prime (166216015571).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4778841 + ... + 4813496.

Almost surely, 2^166216015536 is an apocalyptic number.

166216015536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166216015536 is an abundant number, since it is smaller than the sum of its proper divisors (286964400936).

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

166216015536 is a wasteful number, since it uses less digits than its factorization.

166216015536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9592386 (or 9592361 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 166216015536 in words is "one hundred sixty-six billion, two hundred sixteen million, fifteen thousand, five hundred thirty-six".