166056217216070 has 32 divisors (see below), whose sum is σ = 303349282936128. Its totient is φ = 65436145463808.

The previous prime is 166056217216067. The next prime is 166056217216103. The reversal of 166056217216070 is 70612712650661.

It is a super-2 number, since 2×166056217216070² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132089834 + ... + 133341053.

It is an arithmetic number, because the mean of its divisors is an integer number (9479665091754).

Almost surely, 2^{166056217216070} is an apocalyptic number.

166056217216070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166056217216070 is a deficient number, since it is larger than the sum of its proper divisors (137293065720058).

166056217216070 is a wasteful number, since it uses less digits than its factorization.

166056217216070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265431824.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 166056217216070 in words is "one hundred sixty-six trillion, fifty-six billion, two hundred seventeen million, two hundred sixteen thousand, seventy".