166499503104 has 352 divisors, whose sum is σ = 508085706240. Its totient is φ = 48008396800.

The previous prime is 166499503099. The next prime is 166499503141. The reversal of 166499503104 is 401305994661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (352).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69576532 + ... + 69578924.

Almost surely, 2^166499503104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166499503104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254042853120).

166499503104 is an abundant number, since it is smaller than the sum of its proper divisors (341586203136).

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

166499503104 is a wasteful number, since it uses less digits than its factorization.

166499503104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 166499503104 in words is "one hundred sixty-six billion, four hundred ninety-nine million, five hundred three thousand, one hundred four".