19662794639342 has 32 divisors (see below), whose sum is σ = 31299752623104. Its totient is φ = 9245361312000.

The previous prime is 19662794639321. The next prime is 19662794639441. The reversal of 19662794639342 is 24393649726691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13918034 + ... + 15265557.

It is an arithmetic number, because the mean of its divisors is an integer number (978117269472).

Almost surely, 2^{19662794639342} is an apocalyptic number.

19662794639342 is a deficient number, since it is larger than the sum of its proper divisors (11636957983762).

19662794639342 is a wasteful number, since it uses less digits than its factorization.

19662794639342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29183864.

The product of its digits is 634894848, while the sum is 71.

The spelling of 19662794639342 in words is "nineteen trillion, six hundred sixty-two billion, seven hundred ninety-four million, six hundred thirty-nine thousand, three hundred forty-two".