1311056455547 has 4 divisors (see below), whose sum is σ = 1368058910160. Its totient is φ = 1254054000936.

The previous prime is 1311056455523. The next prime is 1311056455567. The reversal of 1311056455547 is 7455546501131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311056455547 - 2¹⁴ = 1311056439163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311056455567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28501227272 + ... + 28501227317.

It is an arithmetic number, because the mean of its divisors is an integer number (342014727540).

Almost surely, 2^{1311056455547} is an apocalyptic number.

1311056455547 is a deficient number, since it is larger than the sum of its proper divisors (57002454613).

1311056455547 is an equidigital number, since it uses as much as digits as its factorization.

1311056455547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57002454612.

The product of its (nonzero) digits is 1260000, while the sum is 47.

The spelling of 1311056455547 in words is "one trillion, three hundred eleven billion, fifty-six million, four hundred fifty-five thousand, five hundred forty-seven".