19733172045 has 8 divisors (see below), whose sum is σ = 31573075296. Its totient is φ = 10524358416.

The previous prime is 19733172029. The next prime is 19733172049. The reversal of 19733172045 is 54027133791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19733172045 - 2⁴ = 19733172029 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 19733171988 and 19733172006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19733172049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657772387 + ... + 657772416.

It is an arithmetic number, because the mean of its divisors is an integer number (3946634412).

Almost surely, 2^19733172045 is an apocalyptic number.

19733172045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19733172045 is a deficient number, since it is larger than the sum of its proper divisors (11839903251).

19733172045 is a wasteful number, since it uses less digits than its factorization.

19733172045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315544811.

The product of its (nonzero) digits is 158760, while the sum is 42.

The spelling of 19733172045 in words is "nineteen billion, seven hundred thirty-three million, one hundred seventy-two thousand, forty-five".