166766685100 has 36 divisors (see below), whose sum is σ = 361932275824. Its totient is φ = 66697721280.

The previous prime is 166766685079. The next prime is 166766685101. The reversal of 166766685100 is 1586667661.

It is a happy number.

It is a super-2 number, since 2×166766685100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166766685101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663649 + ... + 879751.

Almost surely, 2^166766685100 is an apocalyptic number.

166766685100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166766685100 is an abundant number, since it is smaller than the sum of its proper divisors (195165590724).

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

166766685100 is a wasteful number, since it uses less digits than its factorization.

166766685100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223834 (or 223827 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 166766685100 in words is "one hundred sixty-six billion, seven hundred sixty-six million, six hundred eighty-five thousand, one hundred".