546457440421 has 4 divisors (see below), whose sum is σ = 546834049344. Its totient is φ = 546080831500.

The previous prime is 546457440337. The next prime is 546457440443. The reversal of 546457440421 is 124044754645.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-546457440421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546457440121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188302285 + ... + 188305186.

It is an arithmetic number, because the mean of its divisors is an integer number (136708512336).

Almost surely, 2^546457440421 is an apocalyptic number.

It is an amenable number.

546457440421 is a deficient number, since it is larger than the sum of its proper divisors (376608923).

546457440421 is a wasteful number, since it uses less digits than its factorization.

546457440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376608922.

The product of its (nonzero) digits is 2150400, while the sum is 46.

The spelling of 546457440421 in words is "five hundred forty-six billion, four hundred fifty-seven million, four hundred forty thousand, four hundred twenty-one".