21890802288719 has 16 divisors (see below), whose sum is σ = 28113940065792. Its totient is φ = 16567143249888.

The previous prime is 21890802288713. The next prime is 21890802288721. The reversal of 21890802288719 is 91788220809812.

It is not a de Polignac number, because 21890802288719 - 2⁴ = 21890802288703 is a prime.

It is a super-2 number, since 2×21890802288719² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21890802288713) 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, 5229525449 + ... + 5229529634.

It is an arithmetic number, because the mean of its divisors is an integer number (1757121254112).

Almost surely, 2^{21890802288719} is an apocalyptic number.

21890802288719 is a deficient number, since it is larger than the sum of its proper divisors (6223137777073).

21890802288719 is a wasteful number, since it uses less digits than its factorization.

21890802288719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10459055126.

The product of its (nonzero) digits is 18579456, while the sum is 65.

The spelling of 21890802288719 in words is "twenty-one trillion, eight hundred ninety billion, eight hundred two million, two hundred eighty-eight thousand, seven hundred nineteen".