785231461872 has 160 divisors (see below), whose sum is σ = 2647944687360. Its totient is φ = 219645146880.

The previous prime is 785231461849. The next prime is 785231461873. The reversal of 785231461872 is 278164132587.

785231461872 is a `hidden beast` number, since 7 + 8 + 5 + 2 + 3 + 14 + 618 + 7 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 (785231461873) 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 31 ways as a sum of consecutive naturals, for example, 6293698 + ... + 6417249.

It is an arithmetic number, because the mean of its divisors is an integer number (16549654296).

Almost surely, 2^785231461872 is an apocalyptic number.

785231461872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

785231461872 is an abundant number, since it is smaller than the sum of its proper divisors (1862713225488).

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

785231461872 is a wasteful number, since it uses less digits than its factorization.

785231461872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710988 (or 12710976 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 785231461872 in words is "seven hundred eighty-five billion, two hundred thirty-one million, four hundred sixty-one thousand, eight hundred seventy-two".