21296876066 has 8 divisors (see below), whose sum is σ = 33626646480. Its totient is φ = 10087993908.

The previous prime is 21296876039. The next prime is 21296876099. The reversal of 21296876066 is 66067869212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21296875999 and 21296876017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280222016 + ... + 280222091.

It is an arithmetic number, because the mean of its divisors is an integer number (4203330810).

Almost surely, 2^21296876066 is an apocalyptic number.

21296876066 is a deficient number, since it is larger than the sum of its proper divisors (12329770414).

21296876066 is a wasteful number, since it uses less digits than its factorization.

21296876066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560444128.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 21296876066 in words is "twenty-one billion, two hundred ninety-six million, eight hundred seventy-six thousand, sixty-six".