75052921789 has 2 divisors, whose sum is σ = 75052921790. Its totient is φ = 75052921788.

The previous prime is 75052921781. The next prime is 75052921807. The reversal of 75052921789 is 98712925057.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60294802500 + 14758119289 = 245550^2 + 121483^2 .

It is a cyclic number.

It is not a de Polignac number, because 75052921789 - 2³ = 75052921781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75052921781) by changing a digit.

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 as a sum of consecutive naturals, namely, 37526460894 + 37526460895.

It is an arithmetic number, because the mean of its divisors is an integer number (37526460895).

Almost surely, 2^75052921789 is an apocalyptic number.

It is an amenable number.

75052921789 is a deficient number, since it is larger than the sum of its proper divisors (1).

75052921789 is an equidigital number, since it uses as much as digits as its factorization.

75052921789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 75052921789 in words is "seventy-five billion, fifty-two million, nine hundred twenty-one thousand, seven hundred eighty-nine".