1312566220215 has 48 divisors (see below), whose sum is σ = 2288409623136. Its totient is φ = 695953440000.

The previous prime is 1312566220211. The next prime is 1312566220243. The reversal of 1312566220215 is 5120226652131.

1312566220215 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 5 + 6 + 622 + 0 + 21 + 5 = 666.

It is not a de Polignac number, because 1312566220215 - 2² = 1312566220211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312566220215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312566220211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7069065 + ... + 7252365.

It is an arithmetic number, because the mean of its divisors is an integer number (47675200482).

Almost surely, 2^{1312566220215} is an apocalyptic number.

1312566220215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1312566220215 is a deficient number, since it is larger than the sum of its proper divisors (975843402921).

1312566220215 is a wasteful number, since it uses less digits than its factorization.

1312566220215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184240 (or 184237 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1312566220215 in words is "one trillion, three hundred twelve billion, five hundred sixty-six million, two hundred twenty thousand, two hundred fifteen".