166115533853 has 8 divisors (see below), whose sum is σ = 174660766680. Its totient is φ = 157758108480.

The previous prime is 166115533841. The next prime is 166115533873. The reversal of 166115533853 is 358335511661.

It can be written as a sum of positive squares in 4 ways, for example, as 26255989369 + 139859544484 = 162037^2 + 373978^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166115533853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166115533798 and 166115533807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166115533873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46950050 + ... + 46953587.

It is an arithmetic number, because the mean of its divisors is an integer number (21832595835).

Almost surely, 2^166115533853 is an apocalyptic number.

It is an amenable number.

166115533853 is a deficient number, since it is larger than the sum of its proper divisors (8545232827).

166115533853 is an equidigital number, since it uses as much as digits as its factorization.

166115533853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93903727.

The product of its digits is 972000, while the sum is 47.

The spelling of 166115533853 in words is "one hundred sixty-six billion, one hundred fifteen million, five hundred thirty-three thousand, eight hundred fifty-three".