56440705478238 has 64 divisors (see below), whose sum is σ = 128043949824000. Its totient is φ = 18424101296160.

The previous prime is 56440705478219. The next prime is 56440705478279. The reversal of 56440705478238 is 83287450704465.

56440705478238 is a `hidden beast` number, since 5 + 6 + 4 + 4 + 0 + 7 + 0 + 547 + 82 + 3 + 8 = 666.

56440705478238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 48828406 + ... + 49970937.

It is an arithmetic number, because the mean of its divisors is an integer number (2000686716000).

Almost surely, 2^{56440705478238} is an apocalyptic number.

56440705478238 is an abundant number, since it is smaller than the sum of its proper divisors (71603244345762).

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

56440705478238 is a wasteful number, since it uses less digits than its factorization.

56440705478238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98799574 (or 98799568 counting only the distinct ones).

The product of its (nonzero) digits is 180633600, while the sum is 63.

The spelling of 56440705478238 in words is "fifty-six trillion, four hundred forty billion, seven hundred five million, four hundred seventy-eight thousand, two hundred thirty-eight".