775381548480 has 448 divisors, whose sum is σ = 3112553226240. Its totient is φ = 158847897600.

The previous prime is 775381548449. The next prime is 775381548481. The reversal of 775381548480 is 84845183577.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775381548481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5174451 + ... + 5322189.

Almost surely, 2^775381548480 is an apocalyptic number.

775381548480 is a gapful number since it is divisible by the number (70) 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 775381548480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556276613120).

775381548480 is an abundant number, since it is smaller than the sum of its proper divisors (2337171677760).

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

775381548480 is a wasteful number, since it uses less digits than its factorization.

775381548480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147848 (or 147838 counting only the distinct ones).

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 775381548480 in words is "seven hundred seventy-five billion, three hundred eighty-one million, five hundred forty-eight thousand, four hundred eighty".