56541549905840 has 40 divisors (see below), whose sum is σ = 131483363462160. Its totient is φ = 22612446210816.

The previous prime is 56541549905839. The next prime is 56541549905887. The reversal of 56541549905840 is 4850994514565.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×56541549905840² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64778639 + ... + 65645678.

It is an arithmetic number, because the mean of its divisors is an integer number (3287084086554).

Almost surely, 2^{56541549905840} is an apocalyptic number.

It is an amenable number.

56541549905840 is an abundant number, since it is smaller than the sum of its proper divisors (74941813556320).

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

56541549905840 is a wasteful number, since it uses less digits than its factorization.

56541549905840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130429749 (or 130429743 counting only the distinct ones).

The product of its (nonzero) digits is 155520000, while the sum is 65.

The spelling of 56541549905840 in words is "fifty-six trillion, five hundred forty-one billion, five hundred forty-nine million, nine hundred five thousand, eight hundred forty".