19901583272 has 16 divisors (see below), whose sum is σ = 37318538400. Its totient is φ = 9949973040.

The previous prime is 19901583257. The next prime is 19901583281. The reversal of 19901583272 is 27238510991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7997 + ... + 199667.

It is an arithmetic number, because the mean of its divisors is an integer number (2332408650).

Almost surely, 2^19901583272 is an apocalyptic number.

It is an amenable number.

19901583272 is a deficient number, since it is larger than the sum of its proper divisors (17416955128).

19901583272 is a wasteful number, since it uses less digits than its factorization.

19901583272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204656 (or 204652 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 19901583272 in words is "nineteen billion, nine hundred one million, five hundred eighty-three thousand, two hundred seventy-two".