166746816210 has 32 divisors (see below), whose sum is σ = 430976387520. Its totient is φ = 41045370048.

The previous prime is 166746816167. The next prime is 166746816211. The reversal of 166746816210 is 12618647661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 166746816210.

It is not an unprimeable number, because it can be changed into a prime (166746816211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213777580 + ... + 213778359.

It is an arithmetic number, because the mean of its divisors is an integer number (13468012110).

Almost surely, 2^166746816210 is an apocalyptic number.

166746816210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166746816210 is an abundant number, since it is smaller than the sum of its proper divisors (264229571310).

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

166746816210 is a wasteful number, since it uses less digits than its factorization.

166746816210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427555962.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 166746816210 in words is "one hundred sixty-six billion, seven hundred forty-six million, eight hundred sixteen thousand, two hundred ten".