6615111101593 has 2 divisors, whose sum is σ = 6615111101594. Its totient is φ = 6615111101592.

The previous prime is 6615111101579. The next prime is 6615111101659. The reversal of 6615111101593 is 3951011115166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6355904872464 + 259206229129 = 2521092^2 + 509123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6615111101593 is a prime.

It is not a weakly prime, because it can be changed into another prime (6615111101563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307555550796 + 3307555550797.

It is an arithmetic number, because the mean of its divisors is an integer number (3307555550797).

Almost surely, 2^{6615111101593} is an apocalyptic number.

It is an amenable number.

6615111101593 is a deficient number, since it is larger than the sum of its proper divisors (1).

6615111101593 is an equidigital number, since it uses as much as digits as its factorization.

6615111101593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 40.

The spelling of 6615111101593 in words is "six trillion, six hundred fifteen billion, one hundred eleven million, one hundred one thousand, five hundred ninety-three".