166820903962 has 8 divisors (see below), whose sum is σ = 250250731092. Its totient is φ = 83403993600.

The previous prime is 166820903957. The next prime is 166820903969. The reversal of 166820903962 is 269309028661.

It can be written as a sum of positive squares in 2 ways, for example, as 140414328961 + 26406575001 = 374719^2 + 162501^2 .

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

It is not an unprimeable number, because it can be changed into a prime (166820903969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3196839 + ... + 3248602.

Almost surely, 2^166820903962 is an apocalyptic number.

166820903962 is a deficient number, since it is larger than the sum of its proper divisors (83429827130).

166820903962 is a wasteful number, since it uses less digits than its factorization.

166820903962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458384.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 166820903962 in words is "one hundred sixty-six billion, eight hundred twenty million, nine hundred three thousand, nine hundred sixty-two".