6551556011 has 32 divisors (see below), whose sum is σ = 8869357056. Its totient is φ = 4712320800.

The previous prime is 6551556001. The next prime is 6551556013. The reversal of 6551556011 is 1106551556.

It is not a de Polignac number, because 6551556011 - 2¹⁸ = 6551293867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6551556013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94076 + ... + 148166.

It is an arithmetic number, because the mean of its divisors is an integer number (277167408).

Almost surely, 2^6551556011 is an apocalyptic number.

6551556011 is a deficient number, since it is larger than the sum of its proper divisors (2317801045).

6551556011 is a wasteful number, since it uses less digits than its factorization.

6551556011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54144 (or 54122 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 6551556011 is about 80941.6827784053. The cubic root of 6551556011 is about 1871.1767794891.

It can be divided in two parts, 655155 and 6011, that added together give a palindrome (661166).

The spelling of 6551556011 in words is "six billion, five hundred fifty-one million, five hundred fifty-six thousand, eleven".