19172308537272 has 128 divisors (see below), whose sum is σ = 53032543948800. Its totient is φ = 5727463526400.

The previous prime is 19172308537267. The next prime is 19172308537313. The reversal of 19172308537272 is 27273580327191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6707497 + ... + 9128807.

It is an arithmetic number, because the mean of its divisors is an integer number (414316749600).

Almost surely, 2^{19172308537272} is an apocalyptic number.

19172308537272 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 19172308537272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26516271974400).

19172308537272 is an abundant number, since it is smaller than the sum of its proper divisors (33860235411528).

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

19172308537272 is a wasteful number, since it uses less digits than its factorization.

19172308537272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421757 (or 2421753 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 57.

The spelling of 19172308537272 in words is "nineteen trillion, one hundred seventy-two billion, three hundred eight million, five hundred thirty-seven thousand, two hundred seventy-two".