66300806357 has 2 divisors, whose sum is σ = 66300806358. Its totient is φ = 66300806356.

The previous prime is 66300806353. The next prime is 66300806393. The reversal of 66300806357 is 75360800366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66278442916 + 22363441 = 257446^2 + 4729^2 .

It is a cyclic number.

It is not a de Polignac number, because 66300806357 - 2² = 66300806353 is a prime.

It is a super-2 number, since 2×66300806357² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66300806353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33150403178 + 33150403179.

It is an arithmetic number, because the mean of its divisors is an integer number (33150403179).

Almost surely, 2^66300806357 is an apocalyptic number.

It is an amenable number.

66300806357 is a deficient number, since it is larger than the sum of its proper divisors (1).

66300806357 is an equidigital number, since it uses as much as digits as its factorization.

66300806357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 66300806357 in words is "sixty-six billion, three hundred million, eight hundred six thousand, three hundred fifty-seven".