1312456101566 has 4 divisors (see below), whose sum is σ = 1968684152352. Its totient is φ = 656228050782.

The previous prime is 1312456101559. The next prime is 1312456101643. The reversal of 1312456101566 is 6651016542131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328114025390 + ... + 328114025393.

It is an arithmetic number, because the mean of its divisors is an integer number (492171038088).

Almost surely, 2^{1312456101566} is an apocalyptic number.

1312456101566 is a deficient number, since it is larger than the sum of its proper divisors (656228050786).

1312456101566 is an equidigital number, since it uses as much as digits as its factorization.

1312456101566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656228050785.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 1312456101566 in words is "one trillion, three hundred twelve billion, four hundred fifty-six million, one hundred one thousand, five hundred sixty-six".