66312879053 has 2 divisors, whose sum is σ = 66312879054. Its totient is φ = 66312879052.

The previous prime is 66312879037. The next prime is 66312879091. The reversal of 66312879053 is 35097821366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39685819369 + 26627059684 = 199213^2 + 163178^2 .

It is a cyclic number.

It is not a de Polignac number, because 66312879053 - 2⁴ = 66312879037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66312878992 and 66312879010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66312879653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33156439526 + 33156439527.

It is an arithmetic number, because the mean of its divisors is an integer number (33156439527).

Almost surely, 2^66312879053 is an apocalyptic number.

It is an amenable number.

66312879053 is a deficient number, since it is larger than the sum of its proper divisors (1).

66312879053 is an equidigital number, since it uses as much as digits as its factorization.

66312879053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 66312879053 in words is "sixty-six billion, three hundred twelve million, eight hundred seventy-nine thousand, fifty-three".