75376520777 has 4 divisors (see below), whose sum is σ = 75400925460. Its totient is φ = 75352116096.

The previous prime is 75376520761. The next prime is 75376520803. The reversal of 75376520777 is 77702567357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77702567357 = 677 ⋅114774841.

It can be written as a sum of positive squares in 2 ways, for example, as 60213307456 + 15163213321 = 245384^2 + 123139^2 .

It is a cyclic number.

It is not a de Polignac number, because 75376520777 - 2⁴ = 75376520761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75376520477) 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 3 ways as a sum of consecutive naturals, for example, 12197708 + ... + 12203885.

It is an arithmetic number, because the mean of its divisors is an integer number (18850231365).

Almost surely, 2^75376520777 is an apocalyptic number.

It is an amenable number.

75376520777 is a deficient number, since it is larger than the sum of its proper divisors (24404683).

75376520777 is a wasteful number, since it uses less digits than its factorization.

75376520777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24404682.

The product of its (nonzero) digits is 15126300, while the sum is 56.

The spelling of 75376520777 in words is "seventy-five billion, three hundred seventy-six million, five hundred twenty thousand, seven hundred seventy-seven".