640153312145512 has 96 divisors (see below), whose sum is σ = 1345385136291840. Its totient is φ = 285240551024000.

The previous prime is 640153312145497. The next prime is 640153312145573. The reversal of 640153312145512 is 215541213351046.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 53630553 + ... + 64471255.

It is an arithmetic number, because the mean of its divisors is an integer number (14014428503040).

Almost surely, 2^{640153312145512} 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 640153312145512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672692568145920).

640153312145512 is an abundant number, since it is smaller than the sum of its proper divisors (705231824146328).

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

640153312145512 is a wasteful number, since it uses less digits than its factorization.

640153312145512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841935 (or 10841920 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

Adding to 640153312145512 its reverse (215541213351046), we get a palindrome (855694525496558).

The spelling of 640153312145512 in words is "six hundred forty trillion, one hundred fifty-three billion, three hundred twelve million, one hundred forty-five thousand, five hundred twelve".