21889560919 has 8 divisors (see below), whose sum is σ = 21995098560. Its totient is φ = 21784140000.

The previous prime is 21889560883. The next prime is 21889560937. The reversal of 21889560919 is 91906598812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21889560919 - 2¹⁷ = 21889429847 is a prime.

It is a super-2 number, since 2×21889560919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21889560949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359169 + ... + 415669.

It is an arithmetic number, because the mean of its divisors is an integer number (2749387320).

Almost surely, 2^21889560919 is an apocalyptic number.

21889560919 is a deficient number, since it is larger than the sum of its proper divisors (105537641).

21889560919 is a wasteful number, since it uses less digits than its factorization.

21889560919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58361.

The product of its (nonzero) digits is 2799360, while the sum is 58.

The spelling of 21889560919 in words is "twenty-one billion, eight hundred eighty-nine million, five hundred sixty thousand, nine hundred nineteen".