2150155565017 has 2 divisors, whose sum is σ = 2150155565018. Its totient is φ = 2150155565016.

The previous prime is 2150155564993. The next prime is 2150155565021. The reversal of 2150155565017 is 7105655510512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2144317993801 + 5837571216 = 1464349^2 + 76404^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150155565017 - 2¹⁹ = 2150155040729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2150155565027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075077782508 + 1075077782509.

It is an arithmetic number, because the mean of its divisors is an integer number (1075077782509).

Almost surely, 2^{2150155565017} is an apocalyptic number.

It is an amenable number.

2150155565017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150155565017 is an equidigital number, since it uses as much as digits as its factorization.

2150155565017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262500, while the sum is 43.

It can be divided in two parts, 2150155 and 565017, that added together give a palindrome (2715172).

The spelling of 2150155565017 in words is "two trillion, one hundred fifty billion, one hundred fifty-five million, five hundred sixty-five thousand, seventeen".