1556053343311 has 4 divisors (see below), whose sum is σ = 1556112340152. Its totient is φ = 1555994346472.

The previous prime is 1556053343287. The next prime is 1556053343333. The reversal of 1556053343311 is 1133433506551.

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 1556053343311 - 2⁹ = 1556053342799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556053343111) by changing a digit.

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, 29458840 + ... + 29511613.

It is an arithmetic number, because the mean of its divisors is an integer number (389028085038).

Almost surely, 2^{1556053343311} is an apocalyptic number.

1556053343311 is a deficient number, since it is larger than the sum of its proper divisors (58996841).

1556053343311 is an equidigital number, since it uses as much as digits as its factorization.

1556053343311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58996840.

The product of its (nonzero) digits is 243000, while the sum is 40.

Adding to 1556053343311 its reverse (1133433506551), we get a palindrome (2689486849862).

The spelling of 1556053343311 in words is "one trillion, five hundred fifty-six billion, fifty-three million, three hundred forty-three thousand, three hundred eleven".