66524233801 has 2 divisors, whose sum is σ = 66524233802. Its totient is φ = 66524233800.

The previous prime is 66524233799. The next prime is 66524233807. The reversal of 66524233801 is 10833242566.

66524233801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61486641225 + 5037592576 = 247965^2 + 70976^2 .

It is a cyclic number.

It is not a de Polignac number, because 66524233801 - 2¹ = 66524233799 is a prime.

It is a super-2 number, since 2×66524233801² (a number of 22 digits) contains 22 as substring.

Together with 66524233799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66524233807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33262116900 + 33262116901.

It is an arithmetic number, because the mean of its divisors is an integer number (33262116901).

Almost surely, 2^66524233801 is an apocalyptic number.

It is an amenable number.

66524233801 is a deficient number, since it is larger than the sum of its proper divisors (1).

66524233801 is an equidigital number, since it uses as much as digits as its factorization.

66524233801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 66524233801 in words is "sixty-six billion, five hundred twenty-four million, two hundred thirty-three thousand, eight hundred one".