546123531925421 has 2 divisors, whose sum is σ = 546123531925422. Its totient is φ = 546123531925420.

The previous prime is 546123531925337. The next prime is 546123531925501. The reversal of 546123531925421 is 124529135321645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351135542209321 + 194987989716100 = 18738611^2 + 13963810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-546123531925421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546123531922421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273061765962710 + 273061765962711.

It is an arithmetic number, because the mean of its divisors is an integer number (273061765962711).

Almost surely, 2^{546123531925421} is an apocalyptic number.

It is an amenable number.

546123531925421 is a deficient number, since it is larger than the sum of its proper divisors (1).

546123531925421 is an equidigital number, since it uses as much as digits as its factorization.

546123531925421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 53.

The spelling of 546123531925421 in words is "five hundred forty-six trillion, one hundred twenty-three billion, five hundred thirty-one million, nine hundred twenty-five thousand, four hundred twenty-one".