660554957155 has 16 divisors (see below), whose sum is σ = 799665567840. Its totient is φ = 523794016512.

The previous prime is 660554957131. The next prime is 660554957159. The reversal of 660554957155 is 551759455066.

It is a cyclic number.

It is not a de Polignac number, because 660554957155 - 2¹⁷ = 660554826083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660554957155.

It is not an unprimeable number, because it can be changed into a prime (660554957159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707629 + ... + 1349758.

It is an arithmetic number, because the mean of its divisors is an integer number (49979097990).

Almost surely, 2^660554957155 is an apocalyptic number.

660554957155 is a deficient number, since it is larger than the sum of its proper divisors (139110610685).

660554957155 is a wasteful number, since it uses less digits than its factorization.

660554957155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057958.

The product of its (nonzero) digits is 28350000, while the sum is 58.

The spelling of 660554957155 in words is "six hundred sixty billion, five hundred fifty-four million, nine hundred fifty-seven thousand, one hundred fifty-five".