653808045566 has 32 divisors (see below), whose sum is σ = 1148501773440. Its totient is φ = 276331239936.

The previous prime is 653808045559. The next prime is 653808045623. The reversal of 653808045566 is 665540808356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19972886 + ... + 20005593.

It is an arithmetic number, because the mean of its divisors is an integer number (35890680420).

Almost surely, 2^653808045566 is an apocalyptic number.

653808045566 is a deficient number, since it is larger than the sum of its proper divisors (494693727874).

653808045566 is a wasteful number, since it uses less digits than its factorization.

653808045566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39978548.

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 653808045566 in words is "six hundred fifty-three billion, eight hundred eight million, forty-five thousand, five hundred sixty-six".