1312353788805 has 18 divisors (see below), whose sum is σ = 2274759887634. Its totient is φ = 699917922144.

The previous prime is 1312353788783. The next prime is 1312353788813. The reversal of 1312353788805 is 5088873532131.

1312353788805 is a `hidden beast` number, since 1 + 3 + 1 + 23 + 537 + 8 + 8 + 80 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 96854153796 + 1215499635009 = 311214^2 + 1102497^2 .

It is not a de Polignac number, because 1312353788805 - 2¹⁴ = 1312353772421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7599399 + ... + 7770171.

It is an arithmetic number, because the mean of its divisors is an integer number (126375549313).

Almost surely, 2^{1312353788805} is an apocalyptic number.

1312353788805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312353788805 is a deficient number, since it is larger than the sum of its proper divisors (962406098829).

1312353788805 is an frugal number, since it uses more digits than its factorization.

1312353788805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341557 (or 170781 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 1312353788805 in words is "one trillion, three hundred twelve billion, three hundred fifty-three million, seven hundred eighty-eight thousand, eight hundred five".