21841376930 has 8 divisors (see below), whose sum is σ = 39314478492. Its totient is φ = 8736550768.

The previous prime is 21841376929. The next prime is 21841376939. The reversal of 21841376930 is 3967314812.

It can be written as a sum of positive squares in 2 ways, for example, as 20701166641 + 1140210289 = 143879^2 + 33767^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21841376939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092068837 + ... + 1092068856.

Almost surely, 2^21841376930 is an apocalyptic number.

21841376930 is a deficient number, since it is larger than the sum of its proper divisors (17473101562).

21841376930 is a wasteful number, since it uses less digits than its factorization.

21841376930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184137700.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 21841376930 in words is "twenty-one billion, eight hundred forty-one million, three hundred seventy-six thousand, nine hundred thirty".