544405645656 has 48 divisors (see below), whose sum is σ = 1474850449800. Its totient is φ = 181417041792.

The previous prime is 544405645643. The next prime is 544405645657. The reversal of 544405645656 is 656546504445.

544405645656 is a `hidden beast` number, since 54 + 4 + 40 + 56 + 456 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544405645657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 817206 + ... + 1325381.

Almost surely, 2^544405645656 is an apocalyptic number.

It is an amenable number.

544405645656 is an abundant number, since it is smaller than the sum of its proper divisors (930444804144).

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

544405645656 is a wasteful number, since it uses less digits than its factorization.

544405645656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146128 (or 2146121 counting only the distinct ones).

The product of its (nonzero) digits is 34560000, while the sum is 54.

The spelling of 544405645656 in words is "five hundred forty-four billion, four hundred five million, six hundred forty-five thousand, six hundred fifty-six".