21104750919 has 32 divisors (see below), whose sum is σ = 32305799680. Its totient is φ = 12005148672.

The previous prime is 21104750911. The next prime is 21104750959. The reversal of 21104750919 is 91905740112.

It is not a de Polignac number, because 21104750919 - 2³ = 21104750911 is a prime.

It is a super-2 number, since 2×21104750919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104750911) 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 31 ways as a sum of consecutive naturals, for example, 6658167 + ... + 6661335.

It is an arithmetic number, because the mean of its divisors is an integer number (1009556240).

Almost surely, 2^21104750919 is an apocalyptic number.

21104750919 is a deficient number, since it is larger than the sum of its proper divisors (11201048761).

21104750919 is a wasteful number, since it uses less digits than its factorization.

21104750919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519.

The product of its (nonzero) digits is 22680, while the sum is 39.

The spelling of 21104750919 in words is "twenty-one billion, one hundred four million, seven hundred fifty thousand, nine hundred nineteen".