1381061867711 has 4 divisors (see below), whose sum is σ = 1385502581424. Its totient is φ = 1376621154000.

The previous prime is 1381061867683. The next prime is 1381061867719. The reversal of 1381061867711 is 1177681601831.

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

It is a cyclic number.

It is not a de Polignac number, because 1381061867711 - 2³⁴ = 1363881998527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1381061867711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381061867719) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2220356390 + ... + 2220357011.

It is an arithmetic number, because the mean of its divisors is an integer number (346375645356).

Almost surely, 2^{1381061867711} is an apocalyptic number.

1381061867711 is a deficient number, since it is larger than the sum of its proper divisors (4440713713).

1381061867711 is an equidigital number, since it uses as much as digits as its factorization.

1381061867711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440713712.

The product of its (nonzero) digits is 338688, while the sum is 50.

The spelling of 1381061867711 in words is "one trillion, three hundred eighty-one billion, sixty-one million, eight hundred sixty-seven thousand, seven hundred eleven".