660071777130 has 48 divisors (see below), whose sum is σ = 1733178591144. Its totient is φ = 174276374400.

The previous prime is 660071777111. The next prime is 660071777173. The reversal of 660071777130 is 31777170066.

660071777130 is a `hidden beast` number, since 6 + 600 + 7 + 1 + 7 + 7 + 7 + 1 + 30 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 641461633569 + 18610143561 = 800913^2 + 136419^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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 in 23 ways as a sum of consecutive naturals, for example, 36298489 + ... + 36316668.

Almost surely, 2^660071777130 is an apocalyptic number.

660071777130 is an abundant number, since it is smaller than the sum of its proper divisors (1073106814014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660071777130 is a wasteful number, since it uses less digits than its factorization.

660071777130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72615271 (or 72615268 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 45.

The spelling of 660071777130 in words is "six hundred sixty billion, seventy-one million, seven hundred seventy-seven thousand, one hundred thirty".