671000234881 has 2 divisors, whose sum is σ = 671000234882. Its totient is φ = 671000234880.

The previous prime is 671000234803. The next prime is 671000234909. The reversal of 671000234881 is 188432000176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557350340481 + 113649894400 = 746559^2 + 337120^2 .

It is a cyclic number.

It is not a de Polignac number, because 671000234881 - 2³¹ = 668852751233 is a prime.

It is a super-2 number, since 2×671000234881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (671000234581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335500117440 + 335500117441.

It is an arithmetic number, because the mean of its divisors is an integer number (335500117441).

Almost surely, 2^671000234881 is an apocalyptic number.

It is an amenable number.

671000234881 is a deficient number, since it is larger than the sum of its proper divisors (1).

671000234881 is an equidigital number, since it uses as much as digits as its factorization.

671000234881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 671000234881 in words is "six hundred seventy-one billion, two hundred thirty-four thousand, eight hundred eighty-one".