166160570550 has 96 divisors (see below), whose sum is σ = 444439449888. Its totient is φ = 40839966720.

The previous prime is 166160570509. The next prime is 166160570557. The reversal of 166160570550 is 55075061661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166160570557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1249044 + ... + 1375656.

It is an arithmetic number, because the mean of its divisors is an integer number (4629577603).

Almost surely, 2^166160570550 is an apocalyptic number.

166160570550 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 166160570550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222219724944).

166160570550 is an abundant number, since it is smaller than the sum of its proper divisors (278278879338).

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

166160570550 is a wasteful number, since it uses less digits than its factorization.

166160570550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127314 (or 127309 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 166160570550 in words is "one hundred sixty-six billion, one hundred sixty million, five hundred seventy thousand, five hundred fifty".