671424531461 has 2 divisors, whose sum is σ = 671424531462. Its totient is φ = 671424531460.

The previous prime is 671424531431. The next prime is 671424531473. The reversal of 671424531461 is 164135424176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671072256100 + 352275361 = 819190^2 + 18769^2 .

It is a cyclic number.

It is not a de Polignac number, because 671424531461 - 2³⁸ = 396546624517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671424531431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335712265730 + 335712265731.

It is an arithmetic number, because the mean of its divisors is an integer number (335712265731).

Almost surely, 2^671424531461 is an apocalyptic number.

It is an amenable number.

671424531461 is a deficient number, since it is larger than the sum of its proper divisors (1).

671424531461 is an equidigital number, since it uses as much as digits as its factorization.

671424531461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The spelling of 671424531461 in words is "six hundred seventy-one billion, four hundred twenty-four million, five hundred thirty-one thousand, four hundred sixty-one".