75257780550 has 24 divisors (see below), whose sum is σ = 186639296136. Its totient is φ = 20068741440.

The previous prime is 75257780513. The next prime is 75257780581. The reversal of 75257780550 is 5508775257.

It is a junction number, because it is equal to n+sod(n) for n = 75257780493 and 75257780502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250859119 + ... + 250859418.

It is an arithmetic number, because the mean of its divisors is an integer number (7776637339).

Almost surely, 2^75257780550 is an apocalyptic number.

75257780550 is an abundant number, since it is smaller than the sum of its proper divisors (111381515586).

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

75257780550 is a wasteful number, since it uses less digits than its factorization.

75257780550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501718552 (or 501718547 counting only the distinct ones).

The product of its (nonzero) digits is 3430000, while the sum is 51.

The spelling of 75257780550 in words is "seventy-five billion, two hundred fifty-seven million, seven hundred eighty thousand, five hundred fifty".