66201351833 has 2 divisors, whose sum is σ = 66201351834. Its totient is φ = 66201351832.

The previous prime is 66201351793. The next prime is 66201351871. The reversal of 66201351833 is 33815310266.

It is an a-pointer prime, because the next prime (66201351871) can be obtained adding 66201351833 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59647315984 + 6554035849 = 244228^2 + 80957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66201351833 is a prime.

It is not a weakly prime, because it can be changed into another prime (66201951833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33100675916 + 33100675917.

It is an arithmetic number, because the mean of its divisors is an integer number (33100675917).

Almost surely, 2^66201351833 is an apocalyptic number.

It is an amenable number.

66201351833 is a deficient number, since it is larger than the sum of its proper divisors (1).

66201351833 is an equidigital number, since it uses as much as digits as its factorization.

66201351833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 66201351833 in words is "sixty-six billion, two hundred one million, three hundred fifty-one thousand, eight hundred thirty-three".