166202011500 has 192 divisors, whose sum is σ = 555608481792. Its totient is φ = 37818144000.

The previous prime is 166202011433. The next prime is 166202011511. The reversal of 166202011500 is 5110202661.

It is a super-2 number, since 2×166202011500² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2306010 + ... + 2376990.

It is an arithmetic number, because the mean of its divisors is an integer number (2893794176).

Almost surely, 2^166202011500 is an apocalyptic number.

166202011500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166202011500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277804240896).

166202011500 is an abundant number, since it is smaller than the sum of its proper divisors (389406470292).

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

166202011500 is a wasteful number, since it uses less digits than its factorization.

166202011500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71233 (or 71221 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 166202011500 in words is "one hundred sixty-six billion, two hundred two million, eleven thousand, five hundred".