1213162641791 has 16 divisors (see below), whose sum is σ = 1280240095680. Its totient is φ = 1147281653760.

The previous prime is 1213162641787. The next prime is 1213162641811. The reversal of 1213162641791 is 1971462613121.

It is a cyclic number.

It is not a de Polignac number, because 1213162641791 - 2² = 1213162641787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213162641781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40271951 + ... + 40302063.

It is an arithmetic number, because the mean of its divisors is an integer number (80015005980).

Almost surely, 2^{1213162641791} is an apocalyptic number.

1213162641791 is a deficient number, since it is larger than the sum of its proper divisors (67077453889).

1213162641791 is a wasteful number, since it uses less digits than its factorization.

1213162641791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49906.

The product of its digits is 108864, while the sum is 44.

The spelling of 1213162641791 in words is "one trillion, two hundred thirteen billion, one hundred sixty-two million, six hundred forty-one thousand, seven hundred ninety-one".