19142680661243 has 2 divisors, whose sum is σ = 19142680661244. Its totient is φ = 19142680661242.

The previous prime is 19142680661239. The next prime is 19142680661281. The reversal of 19142680661243 is 34216608624191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19142680661243 - 2² = 19142680661239 is a prime.

It is not a weakly prime, because it can be changed into another prime (19142680664243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9571340330621 + 9571340330622.

It is an arithmetic number, because the mean of its divisors is an integer number (9571340330622).

Almost surely, 2^{19142680661243} is an apocalyptic number.

19142680661243 is a deficient number, since it is larger than the sum of its proper divisors (1).

19142680661243 is an equidigital number, since it uses as much as digits as its factorization.

19142680661243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 19142680661243 in words is "nineteen trillion, one hundred forty-two billion, six hundred eighty million, six hundred sixty-one thousand, two hundred forty-three".