671920877408233 has 2 divisors, whose sum is σ = 671920877408234. Its totient is φ = 671920877408232.

The previous prime is 671920877408117. The next prime is 671920877408351. The reversal of 671920877408233 is 332804778029176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596550924569664 + 75369952838569 = 24424392^2 + 8681587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671920877408233 is a prime.

It is not a weakly prime, because it can be changed into another prime (671920877208233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335960438704116 + 335960438704117.

It is an arithmetic number, because the mean of its divisors is an integer number (335960438704117).

Almost surely, 2^{671920877408233} is an apocalyptic number.

It is an amenable number.

671920877408233 is a deficient number, since it is larger than the sum of its proper divisors (1).

671920877408233 is an equidigital number, since it uses as much as digits as its factorization.

671920877408233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170698752, while the sum is 67.

The spelling of 671920877408233 in words is "six hundred seventy-one trillion, nine hundred twenty billion, eight hundred seventy-seven million, four hundred eight thousand, two hundred thirty-three".