785187128412 has 60 divisors (see below), whose sum is σ = 2072562828336. Its totient is φ = 259187973120.

The previous prime is 785187128393. The next prime is 785187128413. The reversal of 785187128412 is 214821781587.

785187128412 is a `hidden beast` number, since 78 + 518 + 7 + 12 + 8 + 41 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785187128413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11730789 + ... + 11797532.

Almost surely, 2^785187128412 is an apocalyptic number.

It is an amenable number.

785187128412 is an abundant number, since it is smaller than the sum of its proper divisors (1287375699924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

785187128412 is a wasteful number, since it uses less digits than its factorization.

785187128412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23528440 (or 23528429 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 54.

The spelling of 785187128412 in words is "seven hundred eighty-five billion, one hundred eighty-seven million, one hundred twenty-eight thousand, four hundred twelve".