16819775391360 has 128 divisors (see below), whose sum is σ = 53690625898560. Its totient is φ = 4478782095360.

The previous prime is 16819775391343. The next prime is 16819775391371. The reversal of 16819775391360 is 6319357791861.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×16819775391360³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16819775391291 and 16819775391300.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5012137 + ... + 7665576.

Almost surely, 2^{16819775391360} is an apocalyptic number.

16819775391360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16819775391360 is an abundant number, since it is smaller than the sum of its proper divisors (36870850507200).

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

16819775391360 is a wasteful number, since it uses less digits than its factorization.

16819775391360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12678426 (or 12678414 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 66.

The spelling of 16819775391360 in words is "sixteen trillion, eight hundred nineteen billion, seven hundred seventy-five million, three hundred ninety-one thousand, three hundred sixty".