642763328004 has 72 divisors (see below), whose sum is σ = 1857758011200. Its totient is φ = 183559021632.

The previous prime is 642763327967. The next prime is 642763328029. The reversal of 642763328004 is 400823367246.

642763328004 is a `hidden beast` number, since 6 + 4 + 2 + 7 + 633 + 2 + 8 + 0 + 0 + 4 = 666.

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 in 23 ways as a sum of consecutive naturals, for example, 78639 + ... + 1136534.

It is an arithmetic number, because the mean of its divisors is an integer number (25802194600).

Almost surely, 2^642763328004 is an apocalyptic number.

It is an amenable number.

642763328004 is an abundant number, since it is smaller than the sum of its proper divisors (1214994683196).

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

642763328004 is a wasteful number, since it uses less digits than its factorization.

642763328004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217289 (or 1217284 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 642763328004 in words is "six hundred forty-two billion, seven hundred sixty-three million, three hundred twenty-eight thousand, four".