166155605101010 has 16 divisors (see below), whose sum is σ = 341805816207936. Its totient is φ = 56967636034608.

The previous prime is 166155605101007. The next prime is 166155605101021. The reversal of 166155605101010 is 10101506551661.

It is a happy number.

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, 1186825750652 + ... + 1186825750791.

It is an arithmetic number, because the mean of its divisors is an integer number (21362863512996).

Almost surely, 2^{166155605101010} is an apocalyptic number.

166155605101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166155605101010 is an abundant number, since it is smaller than the sum of its proper divisors (175650211106926).

166155605101010 is a wasteful number, since it uses less digits than its factorization.

166155605101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373651501457.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 166155605101010 in words is "one hundred sixty-six trillion, one hundred fifty-five billion, six hundred five million, one hundred one thousand, ten".