2661454441 has 2 divisors, whose sum is σ = 2661454442. Its totient is φ = 2661454440.

The previous prime is 2661454421. The next prime is 2661454517. The reversal of 2661454441 is 1444541662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1964705625 + 696748816 = 44325^2 + 26396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661454441 - 2⁵ = 2661454409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2661454441.

It is not a weakly prime, because it can be changed into another prime (2661454421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330727220 + 1330727221.

It is an arithmetic number, because the mean of its divisors is an integer number (1330727221).

Almost surely, 2^2661454441 is an apocalyptic number.

It is an amenable number.

2661454441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661454441 is an equidigital number, since it uses as much as digits as its factorization.

2661454441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 37.

The square root of 2661454441 is about 51589.2861067102. The cubic root of 2661454441 is about 1385.8184705551.

The spelling of 2661454441 in words is "two billion, six hundred sixty-one million, four hundred fifty-four thousand, four hundred forty-one".