54456400464421 has 2 divisors, whose sum is σ = 54456400464422. Its totient is φ = 54456400464420.

The previous prime is 54456400464391. The next prime is 54456400464463. The reversal of 54456400464421 is 12446400465445.

54456400464421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54437259741921 + 19140722500 = 7378161^2 + 138350^2 .

It is a cyclic number.

It is not a de Polignac number, because 54456400464421 - 2¹³ = 54456400456229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54456400464721) 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 as a sum of consecutive naturals, namely, 27228200232210 + 27228200232211.

It is an arithmetic number, because the mean of its divisors is an integer number (27228200232211).

Almost surely, 2^{54456400464421} is an apocalyptic number.

It is an amenable number.

54456400464421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54456400464421 is an equidigital number, since it uses as much as digits as its factorization.

54456400464421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7372800, while the sum is 49.

The spelling of 54456400464421 in words is "fifty-four trillion, four hundred fifty-six billion, four hundred million, four hundred sixty-four thousand, four hundred twenty-one".