6615611089 has 2 divisors, whose sum is σ = 6615611090. Its totient is φ = 6615611088.

The previous prime is 6615611071. The next prime is 6615611099. The reversal of 6615611089 is 9801165166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3313959489 + 3301651600 = 57567^2 + 57460^2 .

It is a cyclic number.

It is not a de Polignac number, because 6615611089 - 2²¹ = 6613513937 is a prime.

It is not a weakly prime, because it can be changed into another prime (6615611029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307805544 + 3307805545.

It is an arithmetic number, because the mean of its divisors is an integer number (3307805545).

Almost surely, 2^6615611089 is an apocalyptic number.

It is an amenable number.

6615611089 is a deficient number, since it is larger than the sum of its proper divisors (1).

6615611089 is an equidigital number, since it uses as much as digits as its factorization.

6615611089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 6615611089 is about 81336.4069098211. The cubic root of 6615611089 is about 1877.2552266443.

The spelling of 6615611089 in words is "six billion, six hundred fifteen million, six hundred eleven thousand, eighty-nine".