75505777828 has 24 divisors (see below), whose sum is σ = 142389625280. Its totient is φ = 34826712480.

The previous prime is 75505777811. The next prime is 75505777847. The reversal of 75505777828 is 82877750557.

It is a super-2 number, since 2×75505777828² (a number of 23 digits) contains 22 as substring.

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, 377688 + ... + 541903.

Almost surely, 2^75505777828 is an apocalyptic number.

It is an amenable number.

75505777828 is a deficient number, since it is larger than the sum of its proper divisors (66883847452).

75505777828 is a wasteful number, since it uses less digits than its factorization.

75505777828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921187 (or 921185 counting only the distinct ones).

The product of its (nonzero) digits is 38416000, while the sum is 61.

The spelling of 75505777828 in words is "seventy-five billion, five hundred five million, seven hundred seventy-seven thousand, eight hundred twenty-eight".