2688421405219 has 16 divisors (see below), whose sum is σ = 2952539850240. Its totient is φ = 2427643548000.

The previous prime is 2688421405157. The next prime is 2688421405261. The reversal of 2688421405219 is 9125041248862.

It is not a de Polignac number, because 2688421405219 - 2⁷ = 2688421405091 is a prime.

It is a super-2 number, since 2×2688421405219² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2688421406219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375604 + ... + 2349025.

It is an arithmetic number, because the mean of its divisors is an integer number (184533740640).

Almost surely, 2^{2688421405219} is an apocalyptic number.

2688421405219 is a deficient number, since it is larger than the sum of its proper divisors (264118445021).

2688421405219 is a wasteful number, since it uses less digits than its factorization.

2688421405219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725242.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 2688421405219 in words is "two trillion, six hundred eighty-eight billion, four hundred twenty-one million, four hundred five thousand, two hundred nineteen".