654381728072 has 36 divisors (see below), whose sum is σ = 1238409229785. Its totient is φ = 324167240320.

The previous prime is 654381728071. The next prime is 654381728081. The reversal of 654381728072 is 270827183456.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 413286979876 + 241094748196 = 642874^2 + 491014^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=572006.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654381728071) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 258545447 + ... + 258547977.

Almost surely, 2^654381728072 is an apocalyptic number.

It is an amenable number.

654381728072 is a deficient number, since it is larger than the sum of its proper divisors (584027501713).

654381728072 is an frugal number, since it uses more digits than its factorization.

654381728072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294 (or 2646 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 654381728072 in words is "six hundred fifty-four billion, three hundred eighty-one million, seven hundred twenty-eight thousand, seventy-two".