166484211259280 has 40 divisors (see below), whose sum is σ = 387088657718712. Its totient is φ = 66591470905344.

The previous prime is 166484211259253. The next prime is 166484211259343. The reversal of 166484211259280 is 82952112484661.

It can be written as a sum of positive squares in 4 ways, for example, as 25247529694864 + 141236681564416 = 5024692^2 + 11884304^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×166484211259280² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32164667 + ... + 36980186.

Almost surely, 2^{166484211259280} is an apocalyptic number.

166484211259280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166484211259280 is an abundant number, since it is smaller than the sum of its proper divisors (220604446459432).

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

166484211259280 is a wasteful number, since it uses less digits than its factorization.

166484211259280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69174963 (or 69174957 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 166484211259280 in words is "one hundred sixty-six trillion, four hundred eighty-four billion, two hundred eleven million, two hundred fifty-nine thousand, two hundred eighty".