1673885124521 has 2 divisors, whose sum is σ = 1673885124522. Its totient is φ = 1673885124520.

The previous prime is 1673885124479. The next prime is 1673885124529. The reversal of 1673885124521 is 1254215883761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1107832031296 + 566053093225 = 1052536^2 + 752365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673885124521 - 2²⁶ = 1673818015657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1673885124529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836942562260 + 836942562261.

It is an arithmetic number, because the mean of its divisors is an integer number (836942562261).

Almost surely, 2^{1673885124521} is an apocalyptic number.

It is an amenable number.

1673885124521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673885124521 is an equidigital number, since it uses as much as digits as its factorization.

1673885124521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3225600, while the sum is 53.

The spelling of 1673885124521 in words is "one trillion, six hundred seventy-three billion, eight hundred eighty-five million, one hundred twenty-four thousand, five hundred twenty-one".