4181785423356 has 24 divisors (see below), whose sum is σ = 9847017666640. Its totient is φ = 1381140139392.

The previous prime is 4181785423303. The next prime is 4181785423391. The reversal of 4181785423356 is 6533245871814.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4181785423296 and 4181785423305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598540521 + ... + 1598543136.

Almost surely, 2^{4181785423356} is an apocalyptic number.

It is an amenable number.

4181785423356 is an abundant number, since it is smaller than the sum of its proper divisors (5665232243284).

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

4181785423356 is a wasteful number, since it uses less digits than its factorization.

4181785423356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197083773 (or 3197083771 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 57.

The spelling of 4181785423356 in words is "four trillion, one hundred eighty-one billion, seven hundred eighty-five million, four hundred twenty-three thousand, three hundred fifty-six".