678533491200 has 120 divisors (see below), whose sum is σ = 2241493106688. Its totient is φ = 180942254080.

The previous prime is 678533491189. The next prime is 678533491249. The reversal of 678533491200 is 2194335876.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 678533491200.

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 11 ways as a sum of consecutive naturals, for example, 8796672 + ... + 8873471.

It is a 2-persistent number, because it is pandigital, and so is 2⋅678533491200 = 1357066982400, but 3⋅678533491200 = 2035600473600 is not.

Almost surely, 2^678533491200 is an apocalyptic number.

678533491200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

678533491200 is an abundant number, since it is smaller than the sum of its proper divisors (1562959615488).

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

678533491200 is a wasteful number, since it uses less digits than its factorization.

678533491200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17670174 (or 17670153 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 678533491200 in words is "six hundred seventy-eight billion, five hundred thirty-three million, four hundred ninety-one thousand, two hundred".