160515115666 has 4 divisors (see below), whose sum is σ = 240772673502. Its totient is φ = 80257557832.

The previous prime is 160515115603. The next prime is 160515115687. The reversal of 160515115666 is 666511515061.

160515115666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 141203844441 + 19311271225 = 375771^2 + 138965^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40128778915 + ... + 40128778918.

Almost surely, 2^160515115666 is an apocalyptic number.

160515115666 is a deficient number, since it is larger than the sum of its proper divisors (80257557836).

160515115666 is an equidigital number, since it uses as much as digits as its factorization.

160515115666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80257557835.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 160515115666 in words is "one hundred sixty billion, five hundred fifteen million, one hundred fifteen thousand, six hundred sixty-six".