775480128000 has 640 divisors, whose sum is σ = 2687329142784. Its totient is φ = 198180864000.

The previous prime is 775480127993. The next prime is 775480128019. The reversal of 775480128000 is 821084577.

It is a tau number, because it is divible by the number of its divisors (640).

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 63 ways as a sum of consecutive naturals, for example, 672575424 + ... + 672576576.

Almost surely, 2^775480128000 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 775480128000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343664571392).

775480128000 is an abundant number, since it is smaller than the sum of its proper divisors (1911849014784).

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

775480128000 is a wasteful number, since it uses less digits than its factorization.

775480128000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The spelling of 775480128000 in words is "seven hundred seventy-five billion, four hundred eighty million, one hundred twenty-eight thousand".