166595512443 has 8 divisors (see below), whose sum is σ = 222140136768. Its totient is φ = 111057281544.

The previous prime is 166595512423. The next prime is 166595512453. The reversal of 166595512443 is 344215595661.

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

It is not a de Polignac number, because 166595512443 - 2¹² = 166595508347 is a prime.

It is a super-2 number, since 2×166595512443² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166595512423) 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, 1537221 + ... + 1642022.

It is an arithmetic number, because the mean of its divisors is an integer number (27767517096).

Almost surely, 2^166595512443 is an apocalyptic number.

166595512443 is a deficient number, since it is larger than the sum of its proper divisors (55544624325).

166595512443 is a wasteful number, since it uses less digits than its factorization.

166595512443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196713.

The product of its digits is 3888000, while the sum is 51.

The spelling of 166595512443 in words is "one hundred sixty-six billion, five hundred ninety-five million, five hundred twelve thousand, four hundred forty-three".