6420064260266 has 8 divisors (see below), whose sum is σ = 9630107182020. Its totient is φ = 3210028532928.

The previous prime is 6420064260199. The next prime is 6420064260283. The reversal of 6420064260266 is 6620624600246.

It can be written as a sum of positive squares in 2 ways, for example, as 5965215179641 + 454849080625 = 2442379^2 + 674425^2 .

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

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, 2303090 + ... + 4259618.

Almost surely, 2^{6420064260266} is an apocalyptic number.

6420064260266 is a deficient number, since it is larger than the sum of its proper divisors (3210042921754).

6420064260266 is a wasteful number, since it uses less digits than its factorization.

6420064260266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597208.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 6420064260266 in words is "six trillion, four hundred twenty billion, sixty-four million, two hundred sixty thousand, two hundred sixty-six".