166374478068 has 48 divisors (see below), whose sum is σ = 416832200064. Its totient is φ = 51460756480.

The previous prime is 166374478027. The next prime is 166374478069. The reversal of 166374478068 is 860874473661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166374478069) 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, 5728905 + ... + 5757872.

It is an arithmetic number, because the mean of its divisors is an integer number (8684004168).

Almost surely, 2^166374478068 is an apocalyptic number.

It is an amenable number.

166374478068 is an abundant number, since it is smaller than the sum of its proper divisors (250457721996).

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

166374478068 is a wasteful number, since it uses less digits than its factorization.

166374478068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486872 (or 11486870 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 166374478068 in words is "one hundred sixty-six billion, three hundred seventy-four million, four hundred seventy-eight thousand, sixty-eight".