6556136231 has 4 divisors (see below), whose sum is σ = 6557568864. Its totient is φ = 6554703600.

The previous prime is 6556136221. The next prime is 6556136239. The reversal of 6556136231 is 1326316556.

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 6556136231 - 2¹⁰ = 6556135207 is a prime.

It is a super-2 number, since 2×6556136231² = 85965844558861770722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556136239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709430 + ... + 718611.

It is an arithmetic number, because the mean of its divisors is an integer number (1639392216).

Almost surely, 2^6556136231 is an apocalyptic number.

6556136231 is a deficient number, since it is larger than the sum of its proper divisors (1432633).

6556136231 is a wasteful number, since it uses less digits than its factorization.

6556136231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432632.

The product of its digits is 97200, while the sum is 38.

The square root of 6556136231 is about 80969.9711683288. The cubic root of 6556136231 is about 1871.6127270650.

The spelling of 6556136231 in words is "six billion, five hundred fifty-six million, one hundred thirty-six thousand, two hundred thirty-one".