19135836727249 has 24 divisors (see below), whose sum is σ = 21048812356320. Its totient is φ = 17383642584000.

The previous prime is 19135836727199. The next prime is 19135836727283. The reversal of 19135836727249 is 94272763853191.

It is not a de Polignac number, because 19135836727249 - 2²⁵ = 19135803172817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19135836727649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2112351882 + ... + 2112360940.

It is an arithmetic number, because the mean of its divisors is an integer number (877033848180).

Almost surely, 2^{19135836727249} is an apocalyptic number.

It is an amenable number.

19135836727249 is a deficient number, since it is larger than the sum of its proper divisors (1912975629071).

19135836727249 is a wasteful number, since it uses less digits than its factorization.

19135836727249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19773 (or 19762 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 67.

The spelling of 19135836727249 in words is "nineteen trillion, one hundred thirty-five billion, eight hundred thirty-six million, seven hundred twenty-seven thousand, two hundred forty-nine".