56189400619808 has 96 divisors (see below), whose sum is σ = 113906054510640. Its totient is φ = 27264885534720.

The previous prime is 56189400619787. The next prime is 56189400619879. The reversal of 56189400619808 is 80891600498165.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 23321056739344 + 32868343880464 = 4829188^2 + 5733092^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775835438 + ... + 775907858.

Almost surely, 2^{56189400619808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56189400619808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56953027255320).

56189400619808 is an abundant number, since it is smaller than the sum of its proper divisors (57716653890832).

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

56189400619808 is a wasteful number, since it uses less digits than its factorization.

56189400619808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74150 (or 74142 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 65.

The spelling of 56189400619808 in words is "fifty-six trillion, one hundred eighty-nine billion, four hundred million, six hundred nineteen thousand, eight hundred eight".