56666330766293 has 2 divisors, whose sum is σ = 56666330766294. Its totient is φ = 56666330766292.

The previous prime is 56666330766263. The next prime is 56666330766337. The reversal of 56666330766293 is 39266703366665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45569290753009 + 11097040013284 = 6750503^2 + 3331222^2 .

It is a cyclic number.

It is not a de Polignac number, because 56666330766293 - 2⁴² = 52268284255189 is a prime.

It is a super-2 number, since 2×56666330766293² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56666330766263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28333165383146 + 28333165383147.

It is an arithmetic number, because the mean of its divisors is an integer number (28333165383147).

Almost surely, 2^{56666330766293} is an apocalyptic number.

It is an amenable number.

56666330766293 is a deficient number, since it is larger than the sum of its proper divisors (1).

56666330766293 is an equidigital number, since it uses as much as digits as its factorization.

56666330766293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793618560, while the sum is 68.

The spelling of 56666330766293 in words is "fifty-six trillion, six hundred sixty-six billion, three hundred thirty million, seven hundred sixty-six thousand, two hundred ninety-three".