2665506043 has 2 divisors, whose sum is σ = 2665506044. Its totient is φ = 2665506042.

The previous prime is 2665506023. The next prime is 2665506101. The reversal of 2665506043 is 3406055662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2665506043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2665505993 and 2665506011.

It is not a weakly prime, because it can be changed into another prime (2665506023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332753021 + 1332753022.

It is an arithmetic number, because the mean of its divisors is an integer number (1332753022).

Almost surely, 2^2665506043 is an apocalyptic number.

2665506043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665506043 is an equidigital number, since it uses as much as digits as its factorization.

2665506043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 2665506043 is about 51628.5390360796. The cubic root of 2665506043 is about 1386.5213366309.

The spelling of 2665506043 in words is "two billion, six hundred sixty-five million, five hundred six thousand, forty-three".