19142959358209 has 4 divisors (see below), whose sum is σ = 19143062044740. Its totient is φ = 19142856671680.

The previous prime is 19142959358167. The next prime is 19142959358291. The reversal of 19142959358209 is 90285395924191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2170990071184 + 16971969287025 = 1473428^2 + 4119705^2 .

It is a cyclic number.

It is not a de Polignac number, because 19142959358209 - 2¹¹ = 19142959356161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19142959350209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51063124 + ... + 51436645.

It is an arithmetic number, because the mean of its divisors is an integer number (4785765511185).

Almost surely, 2^{19142959358209} is an apocalyptic number.

It is an amenable number.

19142959358209 is a deficient number, since it is larger than the sum of its proper divisors (102686531).

19142959358209 is a wasteful number, since it uses less digits than its factorization.

19142959358209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102686530.

The product of its (nonzero) digits is 62985600, while the sum is 67.

The spelling of 19142959358209 in words is "nineteen trillion, one hundred forty-two billion, nine hundred fifty-nine million, three hundred fifty-eight thousand, two hundred nine".