1311561162426 has 32 divisors (see below), whose sum is σ = 2684267771328. Its totient is φ = 426997226880.

The previous prime is 1311561162361. The next prime is 1311561162427. The reversal of 1311561162426 is 6242611651131.

It is not an unprimeable number, because it can be changed into a prime (1311561162427) 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, 5127246 + ... + 5376966.

It is an arithmetic number, because the mean of its divisors is an integer number (83883367854).

Almost surely, 2^{1311561162426} is an apocalyptic number.

1311561162426 is an abundant number, since it is smaller than the sum of its proper divisors (1372706608902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311561162426 is a wasteful number, since it uses less digits than its factorization.

1311561162426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270126.

The product of its digits is 51840, while the sum is 39.

The spelling of 1311561162426 in words is "one trillion, three hundred eleven billion, five hundred sixty-one million, one hundred sixty-two thousand, four hundred twenty-six".