166477543634 has 8 divisors (see below), whose sum is σ = 249727236528. Its totient is φ = 83235131460.

The previous prime is 166477543607. The next prime is 166477543651. The reversal of 166477543634 is 436345774661.

166477543634 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 sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 166477543634.

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 3 ways as a sum of consecutive naturals, for example, 1762652 + ... + 1854695.

It is an arithmetic number, because the mean of its divisors is an integer number (31215904566).

Almost surely, 2^166477543634 is an apocalyptic number.

166477543634 is a deficient number, since it is larger than the sum of its proper divisors (83249692894).

166477543634 is a wasteful number, since it uses less digits than its factorization.

166477543634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640360.

The product of its digits is 30481920, while the sum is 56.

The spelling of 166477543634 in words is "one hundred sixty-six billion, four hundred seventy-seven million, five hundred forty-three thousand, six hundred thirty-four".