166939063628 has 6 divisors (see below), whose sum is σ = 292143361356. Its totient is φ = 83469531812.

The previous prime is 166939063597. The next prime is 166939063649. The reversal of 166939063628 is 826360939661.

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 as a sum of consecutive naturals, namely, 20867382950 + ... + 20867382957.

It is an arithmetic number, because the mean of its divisors is an integer number (48690560226).

Almost surely, 2^166939063628 is an apocalyptic number.

It is an amenable number.

166939063628 is a deficient number, since it is larger than the sum of its proper divisors (125204297728).

166939063628 is a wasteful number, since it uses less digits than its factorization.

166939063628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41734765911 (or 41734765909 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 59.

The spelling of 166939063628 in words is "one hundred sixty-six billion, nine hundred thirty-nine million, sixty-three thousand, six hundred twenty-eight".