660155655115 has 64 divisors (see below), whose sum is σ = 924801546240. Its totient is φ = 447058851840.

The previous prime is 660155655043. The next prime is 660155655143. The reversal of 660155655115 is 511556551066.

It is a happy number.

It is not a de Polignac number, because 660155655115 - 2¹⁷ = 660155524043 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 127023697 + ... + 127028893.

It is an arithmetic number, because the mean of its divisors is an integer number (14450024160).

Almost surely, 2^660155655115 is an apocalyptic number.

660155655115 is a deficient number, since it is larger than the sum of its proper divisors (264645891125).

660155655115 is a wasteful number, since it uses less digits than its factorization.

660155655115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 660155655115 in words is "six hundred sixty billion, one hundred fifty-five million, six hundred fifty-five thousand, one hundred fifteen".