1263144342111 has 16 divisors (see below), whose sum is σ = 1739719584768. Its totient is φ = 814370112000.

The previous prime is 1263144342071. The next prime is 1263144342223. The reversal of 1263144342111 is 1112434413621.

It is not a de Polignac number, because 1263144342111 - 2³⁴ = 1245964472927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263144342011) 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, 4545346 + ... + 4815231.

It is an arithmetic number, because the mean of its divisors is an integer number (108732474048).

Almost surely, 2^{1263144342111} is an apocalyptic number.

1263144342111 is a deficient number, since it is larger than the sum of its proper divisors (476575242657).

1263144342111 is a wasteful number, since it uses less digits than its factorization.

1263144342111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362062.

The product of its digits is 13824, while the sum is 33.

Adding to 1263144342111 its reverse (1112434413621), we get a palindrome (2375578755732).

The spelling of 1263144342111 in words is "one trillion, two hundred sixty-three billion, one hundred forty-four million, three hundred forty-two thousand, one hundred eleven".