2665488061 has 2 divisors, whose sum is σ = 2665488062. Its totient is φ = 2665488060.

The previous prime is 2665488041. The next prime is 2665488083. The reversal of 2665488061 is 1608845662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2401588036 + 263900025 = 49006^2 + 16245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665488061 - 2¹¹ = 2665486013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665488041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332744030 + 1332744031.

It is an arithmetic number, because the mean of its divisors is an integer number (1332744031).

Almost surely, 2^2665488061 is an apocalyptic number.

It is an amenable number.

2665488061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665488061 is an equidigital number, since it uses as much as digits as its factorization.

2665488061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 2665488061 is about 51628.3648879180. The cubic root of 2665488061 is about 1386.5182187135.

The spelling of 2665488061 in words is "two billion, six hundred sixty-five million, four hundred eighty-eight thousand, sixty-one".