19040718145223 has 2 divisors, whose sum is σ = 19040718145224. Its totient is φ = 19040718145222.

The previous prime is 19040718145217. The next prime is 19040718145231. The reversal of 19040718145223 is 32254181704091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19040718145223 - 2¹² = 19040718141127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19040718145283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9520359072611 + 9520359072612.

It is an arithmetic number, because the mean of its divisors is an integer number (9520359072612).

Almost surely, 2^{19040718145223} is an apocalyptic number.

19040718145223 is a deficient number, since it is larger than the sum of its proper divisors (1).

19040718145223 is an equidigital number, since it uses as much as digits as its factorization.

19040718145223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 19040718145223 in words is "nineteen trillion, forty billion, seven hundred eighteen million, one hundred forty-five thousand, two hundred twenty-three".