166869366720 has 168 divisors, whose sum is σ = 616310043984. Its totient is φ = 38141558784.

The previous prime is 166869366611. The next prime is 166869366761. The reversal of 166869366720 is 27663968661.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1726657 + ... + 1820736.

Almost surely, 2^166869366720 is an apocalyptic number.

166869366720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166869366720 is an abundant number, since it is smaller than the sum of its proper divisors (449440677264).

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

166869366720 is a wasteful number, since it uses less digits than its factorization.

166869366720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547427 (or 3547410 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 60.

The spelling of 166869366720 in words is "one hundred sixty-six billion, eight hundred sixty-nine million, three hundred sixty-six thousand, seven hundred twenty".