660161161155 has 16 divisors (see below), whose sum is σ = 1057030573824. Its totient is φ = 351828380640.

The previous prime is 660161161151. The next prime is 660161161171. The reversal of 660161161155 is 551161161066.

It is not a de Polignac number, because 660161161155 - 2² = 660161161151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660161161151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16077061 + ... + 16118070.

It is an arithmetic number, because the mean of its divisors is an integer number (66064410864).

Almost surely, 2^660161161155 is an apocalyptic number.

660161161155 is a deficient number, since it is larger than the sum of its proper divisors (396869412669).

660161161155 is a wasteful number, since it uses less digits than its factorization.

660161161155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32196506.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 660161161155 in words is "six hundred sixty billion, one hundred sixty-one million, one hundred sixty-one thousand, one hundred fifty-five".