640080768960 has 168 divisors, whose sum is σ = 2237703745056. Its totient is φ = 167889991680.

The previous prime is 640080768959. The next prime is 640080768967. The reversal of 640080768960 is 69867080046.

640080768960 is a `hidden beast` number, since 6 + 400 + 80 + 76 + 8 + 96 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 640080768897 and 640080768906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640080768967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1646044 + ... + 1997403.

Almost surely, 2^640080768960 is an apocalyptic number.

640080768960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

640080768960 is an abundant number, since it is smaller than the sum of its proper divisors (1597622976096).

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

640080768960 is a wasteful number, since it uses less digits than its factorization.

640080768960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643531 (or 3643518 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 640080768960 in words is "six hundred forty billion, eighty million, seven hundred sixty-eight thousand, nine hundred sixty".