775385250828 has 24 divisors (see below), whose sum is σ = 1809252786432. Its totient is φ = 258458816784.

The previous prime is 775385250793. The next prime is 775385250833. The reversal of 775385250828 is 828052583577.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 913401 + ... + 1544367.

It is an arithmetic number, because the mean of its divisors is an integer number (75385532768).

Almost surely, 2^775385250828 is an apocalyptic number.

It is an amenable number.

775385250828 is an abundant number, since it is smaller than the sum of its proper divisors (1033867535604).

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

775385250828 is a wasteful number, since it uses less digits than its factorization.

775385250828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733381 (or 733379 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 60.

The spelling of 775385250828 in words is "seven hundred seventy-five billion, three hundred eighty-five million, two hundred fifty thousand, eight hundred twenty-eight".