75623840161 has 2 divisors, whose sum is σ = 75623840162. Its totient is φ = 75623840160.

The previous prime is 75623840119. The next prime is 75623840197. The reversal of 75623840161 is 16104832657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74865168225 + 758671936 = 273615^2 + 27544^2 .

It is a cyclic number.

It is not a de Polignac number, because 75623840161 - 2¹⁵ = 75623807393 is a prime.

It is not a weakly prime, because it can be changed into another prime (75623844161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37811920080 + 37811920081.

It is an arithmetic number, because the mean of its divisors is an integer number (37811920081).

Almost surely, 2^75623840161 is an apocalyptic number.

It is an amenable number.

75623840161 is a deficient number, since it is larger than the sum of its proper divisors (1).

75623840161 is an equidigital number, since it uses as much as digits as its factorization.

75623840161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 75623840161 in words is "seventy-five billion, six hundred twenty-three million, eight hundred forty thousand, one hundred sixty-one".