166511160555 has 8 divisors (see below), whose sum is σ = 266417856912. Its totient is φ = 88805952288.

The previous prime is 166511160551. The next prime is 166511160559. The reversal of 166511160555 is 555061115661.

It is an interprime number because it is at equal distance from previous prime (166511160551) and next prime (166511160559).

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

It is not a de Polignac number, because 166511160555 - 2² = 166511160551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166511160551) 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, 5550372004 + ... + 5550372033.

It is an arithmetic number, because the mean of its divisors is an integer number (33302232114).

Almost surely, 2^166511160555 is an apocalyptic number.

166511160555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166511160555 is a deficient number, since it is larger than the sum of its proper divisors (99906696357).

166511160555 is a wasteful number, since it uses less digits than its factorization.

166511160555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100744045.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 166511160555 in words is "one hundred sixty-six billion, five hundred eleven million, one hundred sixty thousand, five hundred fifty-five".