66325505201 has 2 divisors, whose sum is σ = 66325505202. Its totient is φ = 66325505200.

The previous prime is 66325505137. The next prime is 66325505221. The reversal of 66325505201 is 10250552366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59841390625 + 6484114576 = 244625^2 + 80524^2 .

It is a cyclic number.

It is not a de Polignac number, because 66325505201 - 2⁶ = 66325505137 is a prime.

It is not a weakly prime, because it can be changed into another prime (66325505221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33162752600 + 33162752601.

It is an arithmetic number, because the mean of its divisors is an integer number (33162752601).

Almost surely, 2^66325505201 is an apocalyptic number.

It is an amenable number.

66325505201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66325505201 is an equidigital number, since it uses as much as digits as its factorization.

66325505201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 66325505201 in words is "sixty-six billion, three hundred twenty-five million, five hundred five thousand, two hundred one".