6601811019912 has 48 divisors (see below), whose sum is σ = 18542123549040. Its totient is φ = 2200603672656.

The previous prime is 6601811019887. The next prime is 6601811019949. The reversal of 6601811019912 is 2199101181066.

6601811019912 is a `hidden beast` number, since 6 + 601 + 8 + 1 + 10 + 19 + 9 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1697994718 + ... + 1697998605.

It is an arithmetic number, because the mean of its divisors is an integer number (386294240605).

Almost surely, 2^{6601811019912} is an apocalyptic number.

It is an amenable number.

6601811019912 is an abundant number, since it is smaller than the sum of its proper divisors (11940312529128).

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

6601811019912 is a wasteful number, since it uses less digits than its factorization.

6601811019912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395993344 (or 3395993328 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The spelling of 6601811019912 in words is "six trillion, six hundred one billion, eight hundred eleven million, nineteen thousand, nine hundred twelve".