56785867381 has 8 divisors (see below), whose sum is σ = 58110176960. Its totient is φ = 55461726432.

The previous prime is 56785867373. The next prime is 56785867393. The reversal of 56785867381 is 18376858765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56785867381 - 2³ = 56785867373 is a prime.

It is a super-2 number, since 2×56785867381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56785867331) 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 7 ways as a sum of consecutive naturals, for example, 863056 + ... + 926518.

It is an arithmetic number, because the mean of its divisors is an integer number (7263772120).

Almost surely, 2^56785867381 is an apocalyptic number.

It is an amenable number.

56785867381 is a deficient number, since it is larger than the sum of its proper divisors (1324309579).

56785867381 is a wasteful number, since it uses less digits than its factorization.

56785867381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84315.

The product of its digits is 67737600, while the sum is 64.

The spelling of 56785867381 in words is "fifty-six billion, seven hundred eighty-five million, eight hundred sixty-seven thousand, three hundred eighty-one".