305666620556 has 12 divisors (see below), whose sum is σ = 583545366600. Its totient is φ = 138939372960.

The previous prime is 305666620547. The next prime is 305666620601. The reversal of 305666620556 is 655026666503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3473484281 + ... + 3473484368.

It is an arithmetic number, because the mean of its divisors is an integer number (48628780550).

Almost surely, 2^305666620556 is an apocalyptic number.

It is an amenable number.

305666620556 is a deficient number, since it is larger than the sum of its proper divisors (277878746044).

305666620556 is a wasteful number, since it uses less digits than its factorization.

305666620556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946968664 (or 6946968662 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 50.

The spelling of 305666620556 in words is "three hundred five billion, six hundred sixty-six million, six hundred twenty thousand, five hundred fifty-six".