640244204024 has 8 divisors (see below), whose sum is σ = 1200457882560. Its totient is φ = 320122102008.

The previous prime is 640244203997. The next prime is 640244204051. The reversal of 640244204024 is 420402442046.

It is an interprime number because it is at equal distance from previous prime (640244203997) and next prime (640244204051).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 40015262744 + ... + 40015262759.

It is an arithmetic number, because the mean of its divisors is an integer number (150057235320).

Almost surely, 2^640244204024 is an apocalyptic number.

It is an amenable number.

640244204024 is a deficient number, since it is larger than the sum of its proper divisors (560213678536).

640244204024 is a wasteful number, since it uses less digits than its factorization.

640244204024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80030525509 (or 80030525505 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

The spelling of 640244204024 in words is "six hundred forty billion, two hundred forty-four million, two hundred four thousand, twenty-four".