640002015152 has 10 divisors (see below), whose sum is σ = 1240003904388. Its totient is φ = 320001007568.

The previous prime is 640002015113. The next prime is 640002015251. The reversal of 640002015152 is 251510200046.

640002015152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000062958 + ... + 20000062989.

Almost surely, 2^640002015152 is an apocalyptic number.

It is an amenable number.

640002015152 is a deficient number, since it is larger than the sum of its proper divisors (600001889236).

640002015152 is a wasteful number, since it uses less digits than its factorization.

640002015152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40000125955 (or 40000125949 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 640002015152 its reverse (251510200046), we get a palindrome (891512215198).

The spelling of 640002015152 in words is "six hundred forty billion, two million, fifteen thousand, one hundred fifty-two".