21761969119 has 8 divisors (see below), whose sum is σ = 23885978112. Its totient is φ = 19662234840.

The previous prime is 21761969081. The next prime is 21761969129. The reversal of 21761969119 is 91196916712.

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 21761969119 - 2¹⁷ = 21761838047 is a prime.

It is a super-2 number, since 2×21761969119² (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 (21761969129) 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 7 ways as a sum of consecutive naturals, for example, 6066799 + ... + 6070384.

It is an arithmetic number, because the mean of its divisors is an integer number (2985747264).

Almost surely, 2^21761969119 is an apocalyptic number.

21761969119 is a deficient number, since it is larger than the sum of its proper divisors (2124008993).

21761969119 is a wasteful number, since it uses less digits than its factorization.

21761969119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12137357.

The product of its digits is 367416, while the sum is 52.

The spelling of 21761969119 in words is "twenty-one billion, seven hundred sixty-one million, nine hundred sixty-nine thousand, one hundred nineteen".