1312261362164 has 24 divisors (see below), whose sum is σ = 2314488976800. Its totient is φ = 650988775584.

The previous prime is 1312261362157. The next prime is 1312261362221. The reversal of 1312261362164 is 4612631622131.

It is a congruent number.

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, 720494 + ... + 1773029.

It is an arithmetic number, because the mean of its divisors is an integer number (96437040700).

Almost surely, 2^{1312261362164} is an apocalyptic number.

It is an amenable number.

1312261362164 is a deficient number, since it is larger than the sum of its proper divisors (1002227614636).

1312261362164 is a wasteful number, since it uses less digits than its factorization.

1312261362164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494559 (or 2494557 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

Adding to 1312261362164 its reverse (4612631622131), we get a palindrome (5924892984295).

The spelling of 1312261362164 in words is "one trillion, three hundred twelve billion, two hundred sixty-one million, three hundred sixty-two thousand, one hundred sixty-four".