1311435551553 has 8 divisors (see below), whose sum is σ = 1748911864416. Its totient is φ = 874124803200.

The previous prime is 1311435551549. The next prime is 1311435551593. The reversal of 1311435551553 is 3551555341131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311435551553 - 2² = 1311435551549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1311435551593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41372643 + ... + 41404328.

It is an arithmetic number, because the mean of its divisors is an integer number (218613983052).

Almost surely, 2^{1311435551553} is an apocalyptic number.

It is an amenable number.

1311435551553 is a deficient number, since it is larger than the sum of its proper divisors (437476312863).

1311435551553 is an equidigital number, since it uses as much as digits as its factorization.

1311435551553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82782255.

The product of its digits is 337500, while the sum is 42.

The spelling of 1311435551553 in words is "one trillion, three hundred eleven billion, four hundred thirty-five million, five hundred fifty-one thousand, five hundred fifty-three".