646061523266 has 8 divisors (see below), whose sum is σ = 969106298880. Its totient is φ = 323026090308.

The previous prime is 646061523181. The next prime is 646061523277. The reversal of 646061523266 is 662325160646.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 646061523266.

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, 2160146 + ... + 2440973.

It is an arithmetic number, because the mean of its divisors is an integer number (121138287360).

Almost surely, 2^646061523266 is an apocalyptic number.

646061523266 is a deficient number, since it is larger than the sum of its proper divisors (323044775614).

646061523266 is a wasteful number, since it uses less digits than its factorization.

646061523266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671328.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 646061523266 in words is "six hundred forty-six billion, sixty-one million, five hundred twenty-three thousand, two hundred sixty-six".