6651155506111 has 2 divisors, whose sum is σ = 6651155506112. Its totient is φ = 6651155506110.

The previous prime is 6651155506097. The next prime is 6651155506123. The reversal of 6651155506111 is 1116055511566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6651155506111 - 2²¹ = 6651153408959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6651155506181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325577753055 + 3325577753056.

It is an arithmetic number, because the mean of its divisors is an integer number (3325577753056).

Almost surely, 2^{6651155506111} is an apocalyptic number.

6651155506111 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651155506111 is an equidigital number, since it uses as much as digits as its factorization.

6651155506111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 43.

The spelling of 6651155506111 in words is "six trillion, six hundred fifty-one billion, one hundred fifty-five million, five hundred six thousand, one hundred eleven".