1311226162655 has 4 divisors (see below), whose sum is σ = 1573471395192. Its totient is φ = 1048980930120.

The previous prime is 1311226162639. The next prime is 1311226162661. The reversal of 1311226162655 is 5562616221131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1311226162655 - 2⁴ = 1311226162639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131122616261 + ... + 131122616270.

It is an arithmetic number, because the mean of its divisors is an integer number (393367848798).

Almost surely, 2^{1311226162655} is an apocalyptic number.

1311226162655 is a deficient number, since it is larger than the sum of its proper divisors (262245232537).

1311226162655 is an equidigital number, since it uses as much as digits as its factorization.

1311226162655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262245232536.

The product of its digits is 129600, while the sum is 41.

The spelling of 1311226162655 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, one hundred sixty-two thousand, six hundred fifty-five".