781332480000 has 960 divisors, whose sum is σ = 2943627206520. Its totient is φ = 207028224000.

The previous prime is 781332479969. The next prime is 781332480011. The reversal of 781332480000 is 84233187.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×781332480000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4976639922 + ... + 4976640078.

Almost surely, 2^781332480000 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 781332480000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471813603260).

781332480000 is an abundant number, since it is smaller than the sum of its proper divisors (2162294726520).

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

781332480000 is an frugal number, since it uses more digits than its factorization.

781332480000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 781332480000 in words is "seven hundred eighty-one billion, three hundred thirty-two million, four hundred eighty thousand".