646450462404 has 144 divisors (see below), whose sum is σ = 1684969488384. Its totient is φ = 208888243200.

The previous prime is 646450462313. The next prime is 646450462417. The reversal of 646450462404 is 404264054646.

646450462404 is a `hidden beast` number, since 6 + 46 + 4 + 504 + 62 + 40 + 4 = 666.

646450462404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×646450462404⁴ (a number of 48 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 646450462404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78917949 + ... + 78926139.

Almost surely, 2^646450462404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646450462404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842484744192).

646450462404 is an abundant number, since it is smaller than the sum of its proper divisors (1038519025980).

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

646450462404 is a wasteful number, since it uses less digits than its factorization.

646450462404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8778 (or 8773 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

The spelling of 646450462404 in words is "six hundred forty-six billion, four hundred fifty million, four hundred sixty-two thousand, four hundred four".