6655566555051 has 32 divisors (see below), whose sum is σ = 9463403980800. Its totient is φ = 4160629514880.

The previous prime is 6655566555041. The next prime is 6655566555107. The reversal of 6655566555051 is 1505556655566.

It is a happy number.

It is not a de Polignac number, because 6655566555051 - 2¹³ = 6655566546859 is a prime.

It is a super-2 number, since 2×6655566555051² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6655566555041) 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, 3161130 + ... + 4827408.

It is an arithmetic number, because the mean of its divisors is an integer number (295731374400).

Almost surely, 2^{6655566555051} is an apocalyptic number.

6655566555051 is a deficient number, since it is larger than the sum of its proper divisors (2807837425749).

6655566555051 is a wasteful number, since it uses less digits than its factorization.

6655566555051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666604 (or 1666570 counting only the distinct ones).

The product of its (nonzero) digits is 101250000, while the sum is 60.

The spelling of 6655566555051 in words is "six trillion, six hundred fifty-five billion, five hundred sixty-six million, five hundred fifty-five thousand, fifty-one".