775947064320 has 704 divisors, whose sum is σ = 2960437559040. Its totient is φ = 192037257216.

The previous prime is 775947064237. The next prime is 775947064391. The reversal of 775947064320 is 23460749577.

775947064320 is a `hidden beast` number, since 7 + 7 + 594 + 7 + 0 + 6 + 43 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 171553579 + ... + 171558101.

Almost surely, 2^775947064320 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 775947064320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480218779520).

775947064320 is an abundant number, since it is smaller than the sum of its proper divisors (2184490494720).

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

775947064320 is a wasteful number, since it uses less digits than its factorization.

775947064320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647 (or 4623 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 775947064320 in words is "seven hundred seventy-five billion, nine hundred forty-seven million, sixty-four thousand, three hundred twenty".