654720225565040 has 20 divisors (see below), whose sum is σ = 1522224524438904. Its totient is φ = 261888090225984.

The previous prime is 654720225565039. The next prime is 654720225565057. The reversal of 654720225565040 is 40565522027456.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4092001409702 + ... + 4092001409861.

Almost surely, 2^{654720225565040} is an apocalyptic number.

It is an amenable number.

654720225565040 is an abundant number, since it is smaller than the sum of its proper divisors (867504298873864).

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

654720225565040 is a wasteful number, since it uses less digits than its factorization.

654720225565040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8184002819576 (or 8184002819570 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 53.

The spelling of 654720225565040 in words is "six hundred fifty-four trillion, seven hundred twenty billion, two hundred twenty-five million, five hundred sixty-five thousand, forty".