6551566666101 has 16 divisors (see below), whose sum is σ = 9706856366400. Its totient is φ = 4367336856624.

The previous prime is 6551566666097. The next prime is 6551566666111. The reversal of 6551566666101 is 1016666651556.

It is not a de Polignac number, because 6551566666101 - 2² = 6551566666097 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551566666111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10074831 + ... + 10705388.

It is an arithmetic number, because the mean of its divisors is an integer number (606678522900).

Almost surely, 2^{6551566666101} is an apocalyptic number.

It is an amenable number.

6551566666101 is a deficient number, since it is larger than the sum of its proper divisors (3155289700299).

6551566666101 is a wasteful number, since it uses less digits than its factorization.

6551566666101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20791905 (or 20791899 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 6551566666101 in words is "six trillion, five hundred fifty-one billion, five hundred sixty-six million, six hundred sixty-six thousand, one hundred one".