166023654610650 has 96 divisors (see below), whose sum is σ = 416634021715968. Its totient is φ = 43749369720000.

The previous prime is 166023654610633. The next prime is 166023654610657. The reversal of 166023654610650 is 56016456320661.

It is a junction number, because it is equal to n+sod(n) for n = 166023654610593 and 166023654610602.

It is not an unprimeable number, because it can be changed into a prime (166023654610657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12579312 + ... + 22142411.

It is an arithmetic number, because the mean of its divisors is an integer number (4339937726208).

Almost surely, 2^{166023654610650} is an apocalyptic number.

166023654610650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166023654610650 is an abundant number, since it is smaller than the sum of its proper divisors (250610367105318).

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

166023654610650 is a wasteful number, since it uses less digits than its factorization.

166023654610650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34722116 (or 34722111 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 166023654610650 in words is "one hundred sixty-six trillion, twenty-three billion, six hundred fifty-four million, six hundred ten thousand, six hundred fifty".