1550655561127 has 2 divisors, whose sum is σ = 1550655561128. Its totient is φ = 1550655561126.

The previous prime is 1550655561101. The next prime is 1550655561137. The reversal of 1550655561127 is 7211655560551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1550655561127 - 2²³ = 1550647172519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1550655561137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775327780563 + 775327780564.

It is an arithmetic number, because the mean of its divisors is an integer number (775327780564).

Almost surely, 2^{1550655561127} is an apocalyptic number.

1550655561127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550655561127 is an equidigital number, since it uses as much as digits as its factorization.

1550655561127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575000, while the sum is 49.

The spelling of 1550655561127 in words is "one trillion, five hundred fifty billion, six hundred fifty-five million, five hundred sixty-one thousand, one hundred twenty-seven".