4546221405623 has 2 divisors, whose sum is σ = 4546221405624. Its totient is φ = 4546221405622.

The previous prime is 4546221405619. The next prime is 4546221405709. The reversal of 4546221405623 is 3265041226454.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4546221405623 - 2² = 4546221405619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4546221405823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2273110702811 + 2273110702812.

It is an arithmetic number, because the mean of its divisors is an integer number (2273110702812).

Almost surely, 2^{4546221405623} is an apocalyptic number.

4546221405623 is a deficient number, since it is larger than the sum of its proper divisors (1).

4546221405623 is an equidigital number, since it uses as much as digits as its factorization.

4546221405623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 4546221405623 in words is "four trillion, five hundred forty-six billion, two hundred twenty-one million, four hundred five thousand, six hundred twenty-three".