2665506101 has 2 divisors, whose sum is σ = 2665506102. Its totient is φ = 2665506100.

The previous prime is 2665506043. The next prime is 2665506121. The reversal of 2665506101 is 1016055662.

2665506101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2024910001 + 640596100 = 44999^2 + 25310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2665506101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665506121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332753050 + 1332753051.

It is an arithmetic number, because the mean of its divisors is an integer number (1332753051).

Almost surely, 2^2665506101 is an apocalyptic number.

It is an amenable number.

2665506101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665506101 is an equidigital number, since it uses as much as digits as its factorization.

2665506101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2665506101 is about 51628.5395977845. The cubic root of 2665506101 is about 1386.5213466875.

The spelling of 2665506101 in words is "two billion, six hundred sixty-five million, five hundred six thousand, one hundred one".