12785437165803 has 16 divisors (see below), whose sum is σ = 17225648394240. Its totient is φ = 8434770424416.

The previous prime is 12785437165799. The next prime is 12785437165817. The reversal of 12785437165803 is 30856173458721.

It is not a de Polignac number, because 12785437165803 - 2² = 12785437165799 is a prime.

It is a super-3 number, since 3×12785437165803³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12785437165903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42984925 + ... + 43281342.

It is an arithmetic number, because the mean of its divisors is an integer number (1076603024640).

Almost surely, 2^{12785437165803} is an apocalyptic number.

12785437165803 is a deficient number, since it is larger than the sum of its proper divisors (4440211228437).

12785437165803 is a wasteful number, since it uses less digits than its factorization.

12785437165803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86266786.

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 12785437165803 in words is "twelve trillion, seven hundred eighty-five billion, four hundred thirty-seven million, one hundred sixty-five thousand, eight hundred three".