775780578328 has 16 divisors (see below), whose sum is σ = 1662386953680. Its totient is φ = 332477390688.

The previous prime is 775780578323. The next prime is 775780578347. The reversal of 775780578328 is 823875087577.

It is a super-2 number, since 2×775780578328² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775780578323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6926612251 + ... + 6926612362.

It is an arithmetic number, because the mean of its divisors is an integer number (103899184605).

Almost surely, 2^775780578328 is an apocalyptic number.

It is an amenable number.

775780578328 is an abundant number, since it is smaller than the sum of its proper divisors (886606375352).

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

775780578328 is a wasteful number, since it uses less digits than its factorization.

775780578328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13853224626 (or 13853224622 counting only the distinct ones).

The product of its (nonzero) digits is 184396800, while the sum is 67.

The spelling of 775780578328 in words is "seven hundred seventy-five billion, seven hundred eighty million, five hundred seventy-eight thousand, three hundred twenty-eight".