19120540067309 has 2 divisors, whose sum is σ = 19120540067310. Its totient is φ = 19120540067308.

The previous prime is 19120540067281. The next prime is 19120540067429. The reversal of 19120540067309 is 90376004502191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13114501746025 + 6006038321284 = 3621395^2 + 2450722^2 .

It is a cyclic number.

It is not a de Polignac number, because 19120540067309 - 2³² = 19116245100013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19120540067609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9560270033654 + 9560270033655.

It is an arithmetic number, because the mean of its divisors is an integer number (9560270033655).

Almost surely, 2^{19120540067309} is an apocalyptic number.

It is an amenable number.

19120540067309 is a deficient number, since it is larger than the sum of its proper divisors (1).

19120540067309 is an equidigital number, since it uses as much as digits as its factorization.

19120540067309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 19120540067309 in words is "nineteen trillion, one hundred twenty billion, five hundred forty million, sixty-seven thousand, three hundred nine".