21276313066 has 8 divisors (see below), whose sum is σ = 31915758240. Its totient is φ = 10637726988.

The previous prime is 21276313063. The next prime is 21276313067. The reversal of 21276313066 is 66031367212.

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 (21276313063) 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, 148806 + ... + 254353.

It is an arithmetic number, because the mean of its divisors is an integer number (3989469780).

Almost surely, 2^21276313066 is an apocalyptic number.

21276313066 is a deficient number, since it is larger than the sum of its proper divisors (10639445174).

21276313066 is a wasteful number, since it uses less digits than its factorization.

21276313066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429548.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 21276313066 in words is "twenty-one billion, two hundred seventy-six million, three hundred thirteen thousand, sixty-six".