27173966990128 has 20 divisors (see below), whose sum is σ = 60170926906960. Its totient is φ = 11645985852864.

The previous prime is 27173966990117. The next prime is 27173966990141. The reversal of 27173966990128 is 82109966937172.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 121312352523 + ... + 121312352746.

It is an arithmetic number, because the mean of its divisors is an integer number (3008546345348).

Almost surely, 2^{27173966990128} is an apocalyptic number.

27173966990128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27173966990128 is an abundant number, since it is smaller than the sum of its proper divisors (32996959916832).

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

27173966990128 is a wasteful number, since it uses less digits than its factorization.

27173966990128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242624705284 (or 242624705278 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 70.

The spelling of 27173966990128 in words is "twenty-seven trillion, one hundred seventy-three billion, nine hundred sixty-six million, nine hundred ninety thousand, one hundred twenty-eight".