640000043482 has 4 divisors (see below), whose sum is σ = 960000065226. Its totient is φ = 320000021740.

The previous prime is 640000043471. The next prime is 640000043531. The reversal of 640000043482 is 284340000046.

640000043482 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 509865974401 + 130134069081 = 714049^2 + 360741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160000010869 + ... + 160000010872.

Almost surely, 2^640000043482 is an apocalyptic number.

640000043482 is a deficient number, since it is larger than the sum of its proper divisors (320000021744).

640000043482 is a wasteful number, since it uses less digits than its factorization.

640000043482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320000021743.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 640000043482 in words is "six hundred forty billion, forty-three thousand, four hundred eighty-two".