1311061324655 has 8 divisors (see below), whose sum is σ = 1627524403200. Its totient is φ = 1012681850656.

The previous prime is 1311061324649. The next prime is 1311061324669. The reversal of 1311061324655 is 5564231601131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311061324655 - 2⁸ = 1311061324399 is a prime.

It is a super-2 number, since 2×1311061324655² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520900975 + ... + 4520901264.

It is an arithmetic number, because the mean of its divisors is an integer number (203440550400).

Almost surely, 2^{1311061324655} is an apocalyptic number.

1311061324655 is a deficient number, since it is larger than the sum of its proper divisors (316463078545).

1311061324655 is an equidigital number, since it uses as much as digits as its factorization.

1311061324655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9041802273.

The product of its (nonzero) digits is 64800, while the sum is 38.

Adding to 1311061324655 its reverse (5564231601131), we get a palindrome (6875292925786).

The spelling of 1311061324655 in words is "one trillion, three hundred eleven billion, sixty-one million, three hundred twenty-four thousand, six hundred fifty-five".