266688466379 has 2 divisors, whose sum is σ = 266688466380. Its totient is φ = 266688466378.

The previous prime is 266688466337. The next prime is 266688466439. The reversal of 266688466379 is 973664886662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266688466379 - 2¹⁶ = 266688400843 is a prime.

It is a super-2 number, since 2×266688466379² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266688466279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133344233189 + 133344233190.

It is an arithmetic number, because the mean of its divisors is an integer number (133344233190).

Almost surely, 2^266688466379 is an apocalyptic number.

266688466379 is a deficient number, since it is larger than the sum of its proper divisors (1).

266688466379 is an equidigital number, since it uses as much as digits as its factorization.

266688466379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752467968, while the sum is 71.

The spelling of 266688466379 in words is "two hundred sixty-six billion, six hundred eighty-eight million, four hundred sixty-six thousand, three hundred seventy-nine".