6673312742521 has 2 divisors, whose sum is σ = 6673312742522. Its totient is φ = 6673312742520.

The previous prime is 6673312742497. The next prime is 6673312742543. The reversal of 6673312742521 is 1252472133766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6336899982400 + 336412760121 = 2517320^2 + 580011^2 .

It is a cyclic number.

It is not a de Polignac number, because 6673312742521 - 2²⁹ = 6672775871609 is a prime.

It is a super-3 number, since 3×6673312742521³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6673312742581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3336656371260 + 3336656371261.

It is an arithmetic number, because the mean of its divisors is an integer number (3336656371261).

Almost surely, 2^{6673312742521} is an apocalyptic number.

It is an amenable number.

6673312742521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6673312742521 is an equidigital number, since it uses as much as digits as its factorization.

6673312742521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The spelling of 6673312742521 in words is "six trillion, six hundred seventy-three billion, three hundred twelve million, seven hundred forty-two thousand, five hundred twenty-one".