1351643501111 has 2 divisors, whose sum is σ = 1351643501112. Its totient is φ = 1351643501110.

The previous prime is 1351643500973. The next prime is 1351643501123. The reversal of 1351643501111 is 1111053461531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1351643501111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351643501911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675821750555 + 675821750556.

It is an arithmetic number, because the mean of its divisors is an integer number (675821750556).

Almost surely, 2^{1351643501111} is an apocalyptic number.

1351643501111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351643501111 is an equidigital number, since it uses as much as digits as its factorization.

1351643501111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 1351643501111 its reverse (1111053461531), we get a palindrome (2462696962642).

The spelling of 1351643501111 in words is "one trillion, three hundred fifty-one billion, six hundred forty-three million, five hundred one thousand, one hundred eleven".