166061010550 has 48 divisors (see below), whose sum is σ = 316477962864. Its totient is φ = 64789760000.

The previous prime is 166061010517. The next prime is 166061010587. The reversal of 166061010550 is 55010160661.

166061010550 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166061010550² (a number of 23 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 (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16068885 + ... + 16079215.

It is an arithmetic number, because the mean of its divisors is an integer number (6593290893).

Almost surely, 2^166061010550 is an apocalyptic number.

166061010550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166061010550 is a deficient number, since it is larger than the sum of its proper divisors (150416952314).

166061010550 is a wasteful number, since it uses less digits than its factorization.

166061010550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18225 (or 18220 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 166061010550 in words is "one hundred sixty-six billion, sixty-one million, ten thousand, five hundred fifty".