166870170038 has 32 divisors (see below), whose sum is σ = 298885682592. Its totient is φ = 68867654400.

The previous prime is 166870170037. The next prime is 166870170067. The reversal of 166870170038 is 830071078661.

It is a super-2 number, since 2×166870170038² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166870169974 and 166870170001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166870170037) 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, 4765031 + ... + 4799922.

It is an arithmetic number, because the mean of its divisors is an integer number (9340177581).

Almost surely, 2^166870170038 is an apocalyptic number.

166870170038 is a deficient number, since it is larger than the sum of its proper divisors (132015512554).

166870170038 is a wasteful number, since it uses less digits than its factorization.

166870170038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565040.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 166870170038 in words is "one hundred sixty-six billion, eight hundred seventy million, one hundred seventy thousand, thirty-eight".