554963806721 has 2 divisors, whose sum is σ = 554963806722. Its totient is φ = 554963806720.

The previous prime is 554963806613. The next prime is 554963806741. The reversal of 554963806721 is 127608369455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540144153025 + 14819653696 = 734945^2 + 121736^2 .

It is a cyclic number.

It is not a de Polignac number, because 554963806721 - 2³⁸ = 280085899777 is a prime.

It is not a weakly prime, because it can be changed into another prime (554963806741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277481903360 + 277481903361.

It is an arithmetic number, because the mean of its divisors is an integer number (277481903361).

It is a 1-persistent number, because it is pandigital, but 2⋅554963806721 = 1109927613442 is not.

Almost surely, 2^554963806721 is an apocalyptic number.

It is an amenable number.

554963806721 is a deficient number, since it is larger than the sum of its proper divisors (1).

554963806721 is an equidigital number, since it uses as much as digits as its factorization.

554963806721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 554963806721 in words is "five hundred fifty-four billion, nine hundred sixty-three million, eight hundred six thousand, seven hundred twenty-one".