56815188078 has 32 divisors (see below), whose sum is σ = 124153287552. Its totient is φ = 17189935200.

The previous prime is 56815188077. The next prime is 56815188119. The reversal of 56815188078 is 87088151865.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56815188071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 626953 + ... + 711828.

It is an arithmetic number, because the mean of its divisors is an integer number (3879790236).

Almost surely, 2^56815188078 is an apocalyptic number.

56815188078 is an abundant number, since it is smaller than the sum of its proper divisors (67338099474).

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

56815188078 is a wasteful number, since it uses less digits than its factorization.

56815188078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339440.

The product of its (nonzero) digits is 4300800, while the sum is 57.

The spelling of 56815188078 in words is "fifty-six billion, eight hundred fifteen million, one hundred eighty-eight thousand, seventy-eight".