16438708248972 has 12 divisors (see below), whose sum is σ = 38356985914296. Its totient is φ = 5479569416320.

The previous prime is 16438708248857. The next prime is 16438708248973. The reversal of 16438708248972 is 27984280783461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×16438708248972² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16438708248897 and 16438708248906.

It is not an unprimeable number, because it can be changed into a prime (16438708248973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684946177029 + ... + 684946177052.

It is an arithmetic number, because the mean of its divisors is an integer number (3196415492858).

Almost surely, 2^{16438708248972} is an apocalyptic number.

16438708248972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16438708248972 is an abundant number, since it is smaller than the sum of its proper divisors (21918277665324).

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

16438708248972 is a wasteful number, since it uses less digits than its factorization.

16438708248972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369892354088 (or 1369892354086 counting only the distinct ones).

The product of its (nonzero) digits is 260112384, while the sum is 69.

The spelling of 16438708248972 in words is "sixteen trillion, four hundred thirty-eight billion, seven hundred eight million, two hundred forty-eight thousand, nine hundred seventy-two".