6556165155013 has 4 divisors (see below), whose sum is σ = 6565412215180. Its totient is φ = 6546918094848.

The previous prime is 6556165155011. The next prime is 6556165155017. The reversal of 6556165155013 is 3105515616556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 867071981889 + 5689093173124 = 931167^2 + 2385182^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556165155013 - 2¹ = 6556165155011 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 (6556165155011) 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, 4623529020 + ... + 4623530437.

It is an arithmetic number, because the mean of its divisors is an integer number (1641353053795).

Almost surely, 2^{6556165155013} is an apocalyptic number.

It is an amenable number.

6556165155013 is a deficient number, since it is larger than the sum of its proper divisors (9247060167).

6556165155013 is an equidigital number, since it uses as much as digits as its factorization.

6556165155013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9247060166.

The product of its (nonzero) digits is 2025000, while the sum is 49.

The spelling of 6556165155013 in words is "six trillion, five hundred fifty-six billion, one hundred sixty-five million, one hundred fifty-five thousand, thirteen".