648215603541 has 24 divisors (see below), whose sum is σ = 1025668987200. Its totient is φ = 391227811200.

The previous prime is 648215603527. The next prime is 648215603551. The reversal of 648215603541 is 145306512846.

648215603541 is a `hidden beast` number, since 6 + 4 + 82 + 1 + 560 + 3 + 5 + 4 + 1 = 666.

648215603541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 648215603541 - 2⁹ = 648215603029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648215603501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13560441 + ... + 13608158.

It is an arithmetic number, because the mean of its divisors is an integer number (42736207800).

Almost surely, 2^648215603541 is an apocalyptic number.

It is an amenable number.

648215603541 is a deficient number, since it is larger than the sum of its proper divisors (377453383659).

648215603541 is a wasteful number, since it uses less digits than its factorization.

648215603541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27168857 (or 27168854 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 648215603541 in words is "six hundred forty-eight billion, two hundred fifteen million, six hundred three thousand, five hundred forty-one".