166405620622 has 32 divisors (see below), whose sum is σ = 262392036192. Its totient is φ = 79048617984.

The previous prime is 166405620613. The next prime is 166405620631. The reversal of 166405620622 is 226026504661.

166405620622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166405620613) and next prime (166405620631).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17155678 + ... + 17165374.

It is an arithmetic number, because the mean of its divisors is an integer number (8199751131).

Almost surely, 2^166405620622 is an apocalyptic number.

166405620622 is a deficient number, since it is larger than the sum of its proper divisors (95986415570).

166405620622 is a wasteful number, since it uses less digits than its factorization.

166405620622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 166405620622 in words is "one hundred sixty-six billion, four hundred five million, six hundred twenty thousand, six hundred twenty-two".