671424529393 has 2 divisors, whose sum is σ = 671424529394. Its totient is φ = 671424529392.

The previous prime is 671424529387. The next prime is 671424529421. The reversal of 671424529393 is 393925424176.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474765097024 + 196659432369 = 689032^2 + 443463^2 .

It is a cyclic number.

It is not a de Polignac number, because 671424529393 - 2¹⁷ = 671424398321 is a prime.

It is a super-2 number, since 2×671424529393² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (671424529693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335712264696 + 335712264697.

It is an arithmetic number, because the mean of its divisors is an integer number (335712264697).

Almost surely, 2^671424529393 is an apocalyptic number.

It is an amenable number.

671424529393 is a deficient number, since it is larger than the sum of its proper divisors (1).

671424529393 is an equidigital number, since it uses as much as digits as its factorization.

671424529393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 55.

The spelling of 671424529393 in words is "six hundred seventy-one billion, four hundred twenty-four million, five hundred twenty-nine thousand, three hundred ninety-three".