2665474480121 has 2 divisors, whose sum is σ = 2665474480122. Its totient is φ = 2665474480120.

The previous prime is 2665474480061. The next prime is 2665474480159. The reversal of 2665474480121 is 1210844745662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2041500873721 + 623973606400 = 1428811^2 + 789920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665474480121 - 2¹⁰ = 2665474479097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2665474480121.

It is not a weakly prime, because it can be changed into another prime (2665474480171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332737240060 + 1332737240061.

It is an arithmetic number, because the mean of its divisors is an integer number (1332737240061).

Almost surely, 2^{2665474480121} is an apocalyptic number.

It is an amenable number.

2665474480121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665474480121 is an equidigital number, since it uses as much as digits as its factorization.

2665474480121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 2665474480121 in words is "two trillion, six hundred sixty-five billion, four hundred seventy-four million, four hundred eighty thousand, one hundred twenty-one".