19874299607399 has 4 divisors (see below), whose sum is σ = 19874557715136. Its totient is φ = 19874041499664.

The previous prime is 19874299607387. The next prime is 19874299607411. The reversal of 19874299607399 is 99370699247891.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (19874299607387) and next prime (19874299607411).

It is a cyclic number.

It is not a de Polignac number, because 19874299607399 - 2¹² = 19874299603303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19874299607699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128938334 + ... + 129092379.

It is an arithmetic number, because the mean of its divisors is an integer number (4968639428784).

Almost surely, 2^{19874299607399} is an apocalyptic number.

19874299607399 is a deficient number, since it is larger than the sum of its proper divisors (258107737).

19874299607399 is an equidigital number, since it uses as much as digits as its factorization.

19874299607399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258107736.

The product of its (nonzero) digits is 3333197952, while the sum is 83.

The spelling of 19874299607399 in words is "nineteen trillion, eight hundred seventy-four billion, two hundred ninety-nine million, six hundred seven thousand, three hundred ninety-nine".