2666519137 has 2 divisors, whose sum is σ = 2666519138. Its totient is φ = 2666519136.

The previous prime is 2666519129. The next prime is 2666519143. The reversal of 2666519137 is 7319156662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2580233616 + 86285521 = 50796^2 + 9289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666519137 - 2³ = 2666519129 is a prime.

It is a super-2 number, since 2×2666519137² = 14220648615974449538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2666519437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333259568 + 1333259569.

It is an arithmetic number, because the mean of its divisors is an integer number (1333259569).

Almost surely, 2^2666519137 is an apocalyptic number.

It is an amenable number.

2666519137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666519137 is an equidigital number, since it uses as much as digits as its factorization.

2666519137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 2666519137 is about 51638.3494798197. The cubic root of 2666519137 is about 1386.6969753902.

The spelling of 2666519137 in words is "two billion, six hundred sixty-six million, five hundred nineteen thousand, one hundred thirty-seven".