266412686377 has 2 divisors, whose sum is σ = 266412686378. Its totient is φ = 266412686376.

The previous prime is 266412686357. The next prime is 266412686401. The reversal of 266412686377 is 773686214662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251382907161 + 15029779216 = 501381^2 + 122596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266412686377 is a prime.

It is a super-2 number, since 2×266412686377² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266412686357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133206343188 + 133206343189.

It is an arithmetic number, because the mean of its divisors is an integer number (133206343189).

Almost surely, 2^266412686377 is an apocalyptic number.

It is an amenable number.

266412686377 is a deficient number, since it is larger than the sum of its proper divisors (1).

266412686377 is an equidigital number, since it uses as much as digits as its factorization.

266412686377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 58.

The spelling of 266412686377 in words is "two hundred sixty-six billion, four hundred twelve million, six hundred eighty-six thousand, three hundred seventy-seven".