550052641661 has 2 divisors, whose sum is σ = 550052641662. Its totient is φ = 550052641660.

The previous prime is 550052641613. The next prime is 550052641679. The reversal of 550052641661 is 166146250055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287504005636 + 262548636025 = 536194^2 + 512395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550052641661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550052641261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275026320830 + 275026320831.

It is an arithmetic number, because the mean of its divisors is an integer number (275026320831).

Almost surely, 2^550052641661 is an apocalyptic number.

It is an amenable number.

550052641661 is a deficient number, since it is larger than the sum of its proper divisors (1).

550052641661 is an equidigital number, since it uses as much as digits as its factorization.

550052641661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 550052641661 in words is "five hundred fifty billion, fifty-two million, six hundred forty-one thousand, six hundred sixty-one".