306655821912 has 64 divisors (see below), whose sum is σ = 852113986560. Its totient is φ = 91172681600.

The previous prime is 306655821907. The next prime is 306655821961. The reversal of 306655821912 is 219128556603.

It is a super-2 number, since 2×306655821912² (a number of 24 digits) contains 22 as substring.

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, 10944264 + ... + 10972247.

It is an arithmetic number, because the mean of its divisors is an integer number (13314281040).

Almost surely, 2^306655821912 is an apocalyptic number.

It is an amenable number.

306655821912 is an abundant number, since it is smaller than the sum of its proper divisors (545458164648).

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

306655821912 is a wasteful number, since it uses less digits than its factorization.

306655821912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21916584 (or 21916580 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 306655821912 in words is "three hundred six billion, six hundred fifty-five million, eight hundred twenty-one thousand, nine hundred twelve".