56861312104 has 32 divisors (see below), whose sum is σ = 107137728000.
Its totient is φ = 28291588672.
The previous prime is 56861312093. The next prime is 56861312107. The reversal of 56861312104 is 40121316865.
Adding to 56861312104 its reverse (40121316865), we get a palindrome (96982628969).
It is a happy number.
It is not an unprimeable number, because it can be changed into a prime (56861312107) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355022 + ... + 1396354.
It is an arithmetic number, because the mean of its divisors is an integer number (3348054000).
Almost surely, 256861312104 is an apocalyptic number.
It is an amenable number.
56861312104 is a deficient number, since it is larger than the sum of its proper divisors (50276415896).
56861312104 is a wasteful number, since it uses less digits than its factorization.
56861312104 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 42177 (or 42173 counting only the distinct ones).
The product of its (nonzero) digits is 34560, while the sum is 37.
The spelling of 56861312104 in words is "fifty-six billion, eight hundred sixty-one million, three hundred twelve thousand, one hundred four".