671065222561493 has 2 divisors, whose sum is σ = 671065222561494. Its totient is φ = 671065222561492.

The previous prime is 671065222561441. The next prime is 671065222561511. The reversal of 671065222561493 is 394165222560176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646374589514404 + 24690633047089 = 25423898^2 + 4968967^2 .

It is a cyclic number.

It is not a de Polignac number, because 671065222561493 - 2⁶ = 671065222561429 is a prime.

It is a super-2 number, since 2×671065222561493² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671065224561493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335532611280746 + 335532611280747.

It is an arithmetic number, because the mean of its divisors is an integer number (335532611280747).

Almost surely, 2^{671065222561493} is an apocalyptic number.

It is an amenable number.

671065222561493 is a deficient number, since it is larger than the sum of its proper divisors (1).

671065222561493 is an equidigital number, since it uses as much as digits as its factorization.

671065222561493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32659200, while the sum is 59.

The spelling of 671065222561493 in words is "six hundred seventy-one trillion, sixty-five billion, two hundred twenty-two million, five hundred sixty-one thousand, four hundred ninety-three".