1288131211426 has 16 divisors (see below), whose sum is σ = 1940293071288. Its totient is φ = 641367072000.

The previous prime is 1288131211369. The next prime is 1288131211441. The reversal of 1288131211426 is 6241121318821.

It can be written as a sum of positive squares in 4 ways, for example, as 1256750860401 + 31380351025 = 1121049^2 + 177145^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18132576 + ... + 18203476.

Almost surely, 2^{1288131211426} is an apocalyptic number.

1288131211426 is a deficient number, since it is larger than the sum of its proper divisors (652161859862).

1288131211426 is a wasteful number, since it uses less digits than its factorization.

1288131211426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108837.

The product of its digits is 36864, while the sum is 40.

The spelling of 1288131211426 in words is "one trillion, two hundred eighty-eight billion, one hundred thirty-one million, two hundred eleven thousand, four hundred twenty-six".