21466959276673 has 4 divisors (see below), whose sum is σ = 21609124570048. Its totient is φ = 21324793983300.

The previous prime is 21466959276667. The next prime is 21466959276677. The reversal of 21466959276673 is 37667295966412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21466959276673 - 2²⁹ = 21466422405761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21466959276596 and 21466959276605.

It is not an unprimeable number, because it can be changed into a prime (21466959276677) 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, 71082646461 + ... + 71082646762.

It is an arithmetic number, because the mean of its divisors is an integer number (5402281142512).

Almost surely, 2^{21466959276673} is an apocalyptic number.

It is an amenable number.

21466959276673 is a deficient number, since it is larger than the sum of its proper divisors (142165293375).

21466959276673 is a wasteful number, since it uses less digits than its factorization.

21466959276673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142165293374.

The product of its digits is 1234517760, while the sum is 73.

The spelling of 21466959276673 in words is "twenty-one trillion, four hundred sixty-six billion, nine hundred fifty-nine million, two hundred seventy-six thousand, six hundred seventy-three".