660532164436 has 24 divisors (see below), whose sum is σ = 1184824655784. Its totient is φ = 322020357120.

The previous prime is 660532164419. The next prime is 660532164437. The reversal of 660532164436 is 634461235066.

It can be written as a sum of positive squares in 4 ways, for example, as 67776915600 + 592755248836 = 260340^2 + 769906^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660532164437) 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, 911845 + ... + 1467148.

It is an arithmetic number, because the mean of its divisors is an integer number (49367693991).

Almost surely, 2^660532164436 is an apocalyptic number.

It is an amenable number.

660532164436 is a deficient number, since it is larger than the sum of its proper divisors (524292491348).

660532164436 is a wasteful number, since it uses less digits than its factorization.

660532164436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380731 (or 2380729 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 46.

The spelling of 660532164436 in words is "six hundred sixty billion, five hundred thirty-two million, one hundred sixty-four thousand, four hundred thirty-six".