648883405044 has 72 divisors (see below), whose sum is σ = 1877196513920. Its totient is φ = 185133719232.

The previous prime is 648883405031. The next prime is 648883405061. The reversal of 648883405044 is 440504388846.

It is a happy number.

648883405044 is a `hidden beast` number, since 6 + 488 + 83 + 40 + 5 + 0 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1637224 + ... + 1994559.

Almost surely, 2^648883405044 is an apocalyptic number.

It is an amenable number.

648883405044 is an abundant number, since it is smaller than the sum of its proper divisors (1228313108876).

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

648883405044 is a wasteful number, since it uses less digits than its factorization.

648883405044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632509 (or 3632504 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 54.

The spelling of 648883405044 in words is "six hundred forty-eight billion, eight hundred eighty-three million, four hundred five thousand, forty-four".