19534113199393 has 8 divisors (see below), whose sum is σ = 21605297759528. Its totient is φ = 17544151563264.

The previous prime is 19534113199387. The next prime is 19534113199451. The reversal of 19534113199393 is 39399131143591.

It can be written as a sum of positive squares in 4 ways, for example, as 345306666384 + 19188806533009 = 587628^2 + 4380503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19534113199393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19534113199333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20305730496 + ... + 20305731457.

It is an arithmetic number, because the mean of its divisors is an integer number (2700662219941).

Almost surely, 2^{19534113199393} is an apocalyptic number.

19534113199393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19534113199393 is a deficient number, since it is larger than the sum of its proper divisors (2071184560135).

19534113199393 is a wasteful number, since it uses less digits than its factorization.

19534113199393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40611462003.

The product of its digits is 10628820, while the sum is 61.

The spelling of 19534113199393 in words is "nineteen trillion, five hundred thirty-four billion, one hundred thirteen million, one hundred ninety-nine thousand, three hundred ninety-three".