19728016356 has 24 divisors (see below), whose sum is σ = 46034523360. Its totient is φ = 6575650432.

The previous prime is 19728016339. The next prime is 19728016361. The reversal of 19728016356 is 65361082791.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284860 + ... + 347276.

It is an arithmetic number, because the mean of its divisors is an integer number (1918105140).

Almost surely, 2^19728016356 is an apocalyptic number.

It is an amenable number.

19728016356 is an abundant number, since it is smaller than the sum of its proper divisors (26306507004).

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

19728016356 is a wasteful number, since it uses less digits than its factorization.

19728016356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88763 (or 88761 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 19728016356 in words is "nineteen billion, seven hundred twenty-eight million, sixteen thousand, three hundred fifty-six".