2665474480061 has 2 divisors, whose sum is σ = 2665474480062. Its totient is φ = 2665474480060.

The previous prime is 2665474480027. The next prime is 2665474480121. The reversal of 2665474480061 is 1600844745662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1979072172025 + 686402308036 = 1406795^2 + 828494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665474480061 - 2²² = 2665470285757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2665474479985 and 2665474480012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665474482061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332737240030 + 1332737240031.

It is an arithmetic number, because the mean of its divisors is an integer number (1332737240031).

Almost surely, 2^{2665474480061} is an apocalyptic number.

It is an amenable number.

2665474480061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665474480061 is an equidigital number, since it uses as much as digits as its factorization.

2665474480061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 2665474480061 in words is "two trillion, six hundred sixty-five billion, four hundred seventy-four million, four hundred eighty thousand, sixty-one".