20227577666166 has 48 divisors (see below), whose sum is σ = 47208063664944. Its totient is φ = 6222500937792.

The previous prime is 20227577666081. The next prime is 20227577666173. The reversal of 20227577666166 is 66166677572202.

It is a happy number.

It is a super-2 number, since 2×20227577666166² (a number of 27 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 23 ways as a sum of consecutive naturals, for example, 8441461 + ... + 10569456.

It is an arithmetic number, because the mean of its divisors is an integer number (983501326353).

Almost surely, 2^{20227577666166} is an apocalyptic number.

20227577666166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20227577666166 is an abundant number, since it is smaller than the sum of its proper divisors (26980485998778).

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

20227577666166 is a wasteful number, since it uses less digits than its factorization.

20227577666166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19015485 (or 19015482 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 63.

The spelling of 20227577666166 in words is "twenty trillion, two hundred twenty-seven billion, five hundred seventy-seven million, six hundred sixty-six thousand, one hundred sixty-six".