2155550933329 has 2 divisors, whose sum is σ = 2155550933330. Its totient is φ = 2155550933328.

The previous prime is 2155550933323. The next prime is 2155550933353. The reversal of 2155550933329 is 9233390555512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1902468490000 + 253082443329 = 1379300^2 + 503073^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155550933329 - 2⁵ = 2155550933297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2155550933323) 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, 1077775466664 + 1077775466665.

It is an arithmetic number, because the mean of its divisors is an integer number (1077775466665).

Almost surely, 2^{2155550933329} is an apocalyptic number.

It is an amenable number.

2155550933329 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155550933329 is an equidigital number, since it uses as much as digits as its factorization.

2155550933329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5467500, while the sum is 52.

The spelling of 2155550933329 in words is "two trillion, one hundred fifty-five billion, five hundred fifty million, nine hundred thirty-three thousand, three hundred twenty-nine".