650038394880 has 1440 divisors, whose sum is σ = 2826539089920. Its totient is φ = 134762987520.

The previous prime is 650038394801. The next prime is 650038394903. The reversal of 650038394880 is 88493830056.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1440).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2719825801 + ... + 2719826039.

It is an arithmetic number, because the mean of its divisors is an integer number (1962874368).

Almost surely, 2^650038394880 is an apocalyptic number.

650038394880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650038394880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413269544960).

650038394880 is an abundant number, since it is smaller than the sum of its proper divisors (2176500695040).

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

650038394880 is a wasteful number, since it uses less digits than its factorization.

650038394880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 650038394880 in words is "six hundred fifty billion, thirty-eight million, three hundred ninety-four thousand, eight hundred eighty".