6566655156055 has 4 divisors (see below), whose sum is σ = 7879986187272. Its totient is φ = 5253324124840.

The previous prime is 6566655155993. The next prime is 6566655156143. The reversal of 6566655156055 is 5506515566656.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-6566655156055 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6566655155984 and 6566655156002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656665515601 + ... + 656665515610.

It is an arithmetic number, because the mean of its divisors is an integer number (1969996546818).

Almost surely, 2^{6566655156055} is an apocalyptic number.

6566655156055 is a deficient number, since it is larger than the sum of its proper divisors (1313331031217).

6566655156055 is a wasteful number, since it uses less digits than its factorization.

6566655156055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313331031216.

The product of its (nonzero) digits is 121500000, while the sum is 61.

The spelling of 6566655156055 in words is "six trillion, five hundred sixty-six billion, six hundred fifty-five million, one hundred fifty-six thousand, fifty-five".