16679799296281 has 9 divisors (see below), whose sum is σ = 18334043648319. Its totient is φ = 15163413064800.

The previous prime is 16679799296273. The next prime is 16679799296309. The reversal of 16679799296281 is 18269299797661.

The square root of 16679799296281 is 4084091.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16607996734681 + 71802561600 = 4075291^2 + 267960^2 .

It is not a de Polignac number, because 16679799296281 - 2³ = 16679799296273 is a prime.

It is a super-2 number, since 2×16679799296281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16679799296195 and 16679799296204.

It is not an unprimeable number, because it can be changed into a prime (16679799296201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44739361 + ... + 45110641.

Almost surely, 2^{16679799296281} is an apocalyptic number.

16679799296281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16679799296281 is the 4084091-st square number.

16679799296281 is the 2042046-th centered octagonal number.

It is an amenable number.

16679799296281 is a deficient number, since it is larger than the sum of its proper divisors (1654244352038).

16679799296281 is an frugal number, since it uses more digits than its factorization.

16679799296281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742584 (or 371292 counting only the distinct ones).

The product of its digits is 2222131968, while the sum is 82.

The spelling of 16679799296281 in words is "sixteen trillion, six hundred seventy-nine billion, seven hundred ninety-nine million, two hundred ninety-six thousand, two hundred eighty-one".