19744150272 has 432 divisors, whose sum is σ = 68022619392. Its totient is φ = 4939038720.

The previous prime is 19744150249. The next prime is 19744150289. The reversal of 19744150272 is 27205144791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49733178 + ... + 49733574.

Almost surely, 2^19744150272 is an apocalyptic number.

19744150272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19744150272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34011309696).

19744150272 is an abundant number, since it is smaller than the sum of its proper divisors (48278469120).

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

19744150272 is a wasteful number, since it uses less digits than its factorization.

19744150272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 19744150272 in words is "nineteen billion, seven hundred forty-four million, one hundred fifty thousand, two hundred seventy-two".