268649063471 has 2 divisors, whose sum is σ = 268649063472. Its totient is φ = 268649063470.

The previous prime is 268649063437. The next prime is 268649063483. The reversal of 268649063471 is 174360946862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268649063471 - 2²⁶ = 268581954607 is a prime.

It is a super-3 number, since 3×268649063471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268649062471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134324531735 + 134324531736.

It is an arithmetic number, because the mean of its divisors is an integer number (134324531736).

Almost surely, 2^268649063471 is an apocalyptic number.

268649063471 is a deficient number, since it is larger than the sum of its proper divisors (1).

268649063471 is an equidigital number, since it uses as much as digits as its factorization.

268649063471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 268649063471 in words is "two hundred sixty-eight billion, six hundred forty-nine million, sixty-three thousand, four hundred seventy-one".