1264312532666 has 16 divisors (see below), whose sum is σ = 1919313225000. Its totient is φ = 624552834048.

The previous prime is 1264312532653. The next prime is 1264312532759. The reversal of 1264312532666 is 6662352134621.

It can be written as a sum of positive squares in 4 ways, for example, as 931234650025 + 333077882641 = 965005^2 + 577129^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1264312532666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2621105 + ... + 3065748.

Almost surely, 2^{1264312532666} is an apocalyptic number.

1264312532666 is a deficient number, since it is larger than the sum of its proper divisors (655000692334).

1264312532666 is a wasteful number, since it uses less digits than its factorization.

1264312532666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688193.

The product of its digits is 1866240, while the sum is 47.

The spelling of 1264312532666 in words is "one trillion, two hundred sixty-four billion, three hundred twelve million, five hundred thirty-two thousand, six hundred sixty-six".