19305066512 has 20 divisors (see below), whose sum is σ = 38199388416. Its totient is φ = 9447159840.

The previous prime is 19305066497. The next prime is 19305066523. The reversal of 19305066512 is 21566050391.

It is a super-2 number, since 2×19305066512² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12835064 + ... + 12836567.

Almost surely, 2^19305066512 is an apocalyptic number.

It is an amenable number.

19305066512 is a deficient number, since it is larger than the sum of its proper divisors (18894321904).

19305066512 is a wasteful number, since it uses less digits than its factorization.

19305066512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25671686 (or 25671680 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The spelling of 19305066512 in words is "nineteen billion, three hundred five million, sixty-six thousand, five hundred twelve".