550010988721 has 2 divisors, whose sum is σ = 550010988722. Its totient is φ = 550010988720.

The previous prime is 550010988713. The next prime is 550010988731. The reversal of 550010988721 is 127889010055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 462075017121 + 87935971600 = 679761^2 + 296540^2 .

It is a cyclic number.

It is not a de Polignac number, because 550010988721 - 2³ = 550010988713 is a prime.

It is not a weakly prime, because it can be changed into another prime (550010988701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275005494360 + 275005494361.

It is an arithmetic number, because the mean of its divisors is an integer number (275005494361).

Almost surely, 2^550010988721 is an apocalyptic number.

It is an amenable number.

550010988721 is a deficient number, since it is larger than the sum of its proper divisors (1).

550010988721 is an equidigital number, since it uses as much as digits as its factorization.

550010988721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 46.

Adding to 550010988721 its reverse (127889010055), we get a palindrome (677899998776).

The spelling of 550010988721 in words is "five hundred fifty billion, ten million, nine hundred eighty-eight thousand, seven hundred twenty-one".