671428961263 has 2 divisors, whose sum is σ = 671428961264. Its totient is φ = 671428961262.

The previous prime is 671428961257. The next prime is 671428961293. The reversal of 671428961263 is 362169824176.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671428961263 is a prime.

It is a super-2 number, since 2×671428961263² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671428961293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335714480631 + 335714480632.

It is an arithmetic number, because the mean of its divisors is an integer number (335714480632).

Almost surely, 2^671428961263 is an apocalyptic number.

671428961263 is a deficient number, since it is larger than the sum of its proper divisors (1).

671428961263 is an equidigital number, since it uses as much as digits as its factorization.

671428961263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 55.

The spelling of 671428961263 in words is "six hundred seventy-one billion, four hundred twenty-eight million, nine hundred sixty-one thousand, two hundred sixty-three".