1367081136721 has 4 divisors (see below), whose sum is σ = 1367109083632. Its totient is φ = 1367053189812.

The previous prime is 1367081136709. The next prime is 1367081136731. The reversal of 1367081136721 is 1276311807631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1367081136721 - 2¹³ = 1367081128529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1367081136731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13899951 + ... + 13997956.

It is an arithmetic number, because the mean of its divisors is an integer number (341777270908).

Almost surely, 2^{1367081136721} is an apocalyptic number.

It is an amenable number.

1367081136721 is a deficient number, since it is larger than the sum of its proper divisors (27946911).

1367081136721 is an equidigital number, since it uses as much as digits as its factorization.

1367081136721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27946910.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 1367081136721 in words is "one trillion, three hundred sixty-seven billion, eighty-one million, one hundred thirty-six thousand, seven hundred twenty-one".