55783816804 has 12 divisors (see below), whose sum is σ = 98390354944. Its totient is φ = 27672286824.

The previous prime is 55783816799. The next prime is 55783816807. The reversal of 55783816804 is 40861838755.

It is a super-2 number, since 2×55783816804² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55783816807) 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 3 ways as a sum of consecutive naturals, for example, 54904824 + ... + 54905839.

Almost surely, 2^55783816804 is an apocalyptic number.

It is an amenable number.

55783816804 is a deficient number, since it is larger than the sum of its proper divisors (42606538140).

55783816804 is a wasteful number, since it uses less digits than its factorization.

55783816804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109810794 (or 109810792 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 55783816804 in words is "fifty-five billion, seven hundred eighty-three million, eight hundred sixteen thousand, eight hundred four".