2170847851129 has 2 divisors, whose sum is σ = 2170847851130. Its totient is φ = 2170847851128.

The previous prime is 2170847851063. The next prime is 2170847851153. The reversal of 2170847851129 is 9211587480712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1409033098729 + 761814752400 = 1187027^2 + 872820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2170847851129 - 2⁹ = 2170847850617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2170847851129.

It is not a weakly prime, because it can be changed into another prime (2170847851169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085423925564 + 1085423925565.

It is an arithmetic number, because the mean of its divisors is an integer number (1085423925565).

Almost surely, 2^{2170847851129} is an apocalyptic number.

It is an amenable number.

2170847851129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170847851129 is an equidigital number, since it uses as much as digits as its factorization.

2170847851129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 55.

The spelling of 2170847851129 in words is "two trillion, one hundred seventy billion, eight hundred forty-seven million, eight hundred fifty-one thousand, one hundred twenty-nine".