166503434130 has 96 divisors (see below), whose sum is σ = 472700225088. Its totient is φ = 40327209600.

The previous prime is 166503434063. The next prime is 166503434147. The reversal of 166503434130 is 31434305661.

166503434130 is a `hidden beast` number, since 16 + 6 + 503 + 4 + 3 + 4 + 130 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1003012 + ... + 1157168.

It is an arithmetic number, because the mean of its divisors is an integer number (4923960678).

Almost surely, 2^166503434130 is an apocalyptic number.

166503434130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166503434130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236350112544).

166503434130 is an abundant number, since it is smaller than the sum of its proper divisors (306196790958).

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

166503434130 is a wasteful number, since it uses less digits than its factorization.

166503434130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155272 (or 155269 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 166503434130 its reverse (31434305661), we get a palindrome (197937739791).

The spelling of 166503434130 in words is "one hundred sixty-six billion, five hundred three million, four hundred thirty-four thousand, one hundred thirty".