75774777312 has 96 divisors (see below), whose sum is σ = 215024882688. Its totient is φ = 23226564096.

The previous prime is 75774777311. The next prime is 75774777317. The reversal of 75774777312 is 21377747757.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75774777311) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 212793 + ... + 443655.

It is an arithmetic number, because the mean of its divisors is an integer number (2239842528).

Almost surely, 2^75774777312 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 75774777312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107512441344).

75774777312 is an abundant number, since it is smaller than the sum of its proper divisors (139250105376).

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

75774777312 is a wasteful number, since it uses less digits than its factorization.

75774777312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231152 (or 231144 counting only the distinct ones).

The product of its digits is 14117880, while the sum is 57.

The spelling of 75774777312 in words is "seventy-five billion, seven hundred seventy-four million, seven hundred seventy-seven thousand, three hundred twelve".