550870661903 has 2 divisors, whose sum is σ = 550870661904. Its totient is φ = 550870661902.

The previous prime is 550870661863. The next prime is 550870661917. The reversal of 550870661903 is 309166078055.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550870661903 - 2⁶ = 550870661839 is a prime.

It is a super-2 number, since 2×550870661903² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550870661983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275435330951 + 275435330952.

It is an arithmetic number, because the mean of its divisors is an integer number (275435330952).

Almost surely, 2^550870661903 is an apocalyptic number.

550870661903 is a deficient number, since it is larger than the sum of its proper divisors (1).

550870661903 is an equidigital number, since it uses as much as digits as its factorization.

550870661903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 550870661903 in words is "five hundred fifty billion, eight hundred seventy million, six hundred sixty-one thousand, nine hundred three".