66130076020513 has 2 divisors, whose sum is σ = 66130076020514. Its totient is φ = 66130076020512.

The previous prime is 66130076020501. The next prime is 66130076020543. The reversal of 66130076020513 is 31502067003166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62639183618064 + 3490892402449 = 7914492^2 + 1868393^2 .

It is a cyclic number.

It is not a de Polignac number, because 66130076020513 - 2⁴¹ = 63931052764961 is a prime.

It is not a weakly prime, because it can be changed into another prime (66130076020543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33065038010256 + 33065038010257.

It is an arithmetic number, because the mean of its divisors is an integer number (33065038010257).

Almost surely, 2^{66130076020513} is an apocalyptic number.

It is an amenable number.

66130076020513 is a deficient number, since it is larger than the sum of its proper divisors (1).

66130076020513 is an equidigital number, since it uses as much as digits as its factorization.

66130076020513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 66130076020513 in words is "sixty-six trillion, one hundred thirty billion, seventy-six million, twenty thousand, five hundred thirteen".