646011236916 has 48 divisors (see below), whose sum is σ = 1674913878400. Its totient is φ = 215328087936.

The previous prime is 646011236887. The next prime is 646011236917. The reversal of 646011236916 is 619632110646.

646011236916 is a `hidden beast` number, since 6 + 4 + 601 + 1 + 2 + 36 + 9 + 1 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646011236917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2786505 + ... + 3009423.

Almost surely, 2^646011236916 is an apocalyptic number.

It is an amenable number.

646011236916 is an abundant number, since it is smaller than the sum of its proper divisors (1028902641484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646011236916 is a wasteful number, since it uses less digits than its factorization.

646011236916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249765 (or 249757 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 646011236916 in words is "six hundred forty-six billion, eleven million, two hundred thirty-six thousand, nine hundred sixteen".