75198805109 has 2 divisors, whose sum is σ = 75198805110. Its totient is φ = 75198805108.

The previous prime is 75198805039. The next prime is 75198805133. The reversal of 75198805109 is 90150889157.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75133551025 + 65254084 = 274105^2 + 8078^2 .

It is a cyclic number.

It is not a de Polignac number, because 75198805109 - 2²⁸ = 74930369653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75198805139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37599402554 + 37599402555.

It is an arithmetic number, because the mean of its divisors is an integer number (37599402555).

Almost surely, 2^75198805109 is an apocalyptic number.

It is an amenable number.

75198805109 is a deficient number, since it is larger than the sum of its proper divisors (1).

75198805109 is an equidigital number, since it uses as much as digits as its factorization.

75198805109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 53.

The spelling of 75198805109 in words is "seventy-five billion, one hundred ninety-eight million, eight hundred five thousand, one hundred nine".