1311255610026 has 8 divisors (see below), whose sum is σ = 2622511220064. Its totient is φ = 437085203340.

The previous prime is 1311255610003. The next prime is 1311255610057. The reversal of 1311255610026 is 6200165521131.

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

1311255610026 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 109271300830 + ... + 109271300841.

It is an arithmetic number, because the mean of its divisors is an integer number (327813902508).

Almost surely, 2^{1311255610026} is an apocalyptic number.

1311255610026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1311255610026 is a wasteful number, since it uses less digits than its factorization.

1311255610026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218542601676.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 1311255610026 in words is "one trillion, three hundred eleven billion, two hundred fifty-five million, six hundred ten thousand, twenty-six".