640484484046 has 32 divisors (see below), whose sum is σ = 1068392042496. Its totient is φ = 285525996000.

The previous prime is 640484483999. The next prime is 640484484061.

640484484046 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 640484483984 and 640484484002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775065 + ... + 1371748.

It is an arithmetic number, because the mean of its divisors is an integer number (33387251328).

Almost surely, 2^640484484046 is an apocalyptic number.

640484484046 is a deficient number, since it is larger than the sum of its proper divisors (427907558450).

640484484046 is a wasteful number, since it uses less digits than its factorization.

640484484046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147088.

The product of its (nonzero) digits is 9437184, while the sum is 52.

The spelling of 640484484046 in words is "six hundred forty billion, four hundred eighty-four million, four hundred eighty-four thousand, forty-six".