1311678667125 has 32 divisors (see below), whose sum is σ = 2425148119680. Its totient is φ = 699561954000.

The previous prime is 1311678667097. The next prime is 1311678667127. The reversal of 1311678667125 is 5217668761131.

It is not a de Polignac number, because 1311678667125 - 2¹⁴ = 1311678650741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311678667127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194319391 + ... + 194326140.

It is an arithmetic number, because the mean of its divisors is an integer number (75785878740).

Almost surely, 2^{1311678667125} is an apocalyptic number.

1311678667125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311678667125 is a deficient number, since it is larger than the sum of its proper divisors (1113469452555).

1311678667125 is an equidigital number, since it uses as much as digits as its factorization.

1311678667125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388645555 (or 388645539 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 1311678667125 in words is "one trillion, three hundred eleven billion, six hundred seventy-eight million, six hundred sixty-seven thousand, one hundred twenty-five".