75201067561 has 2 divisors, whose sum is σ = 75201067562. Its totient is φ = 75201067560.

The previous prime is 75201067483. The next prime is 75201067567. The reversal of 75201067561 is 16576010257.

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., 52560147600 + 22640919961 = 229260^2 + 150469^2 .

It is an emirp because it is prime and its reverse (16576010257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75201067561 - 2⁷ = 75201067433 is a prime.

It is not a weakly prime, because it can be changed into another prime (75201067567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37600533780 + 37600533781.

It is an arithmetic number, because the mean of its divisors is an integer number (37600533781).

Almost surely, 2^75201067561 is an apocalyptic number.

It is an amenable number.

75201067561 is a deficient number, since it is larger than the sum of its proper divisors (1).

75201067561 is an equidigital number, since it uses as much as digits as its factorization.

75201067561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 75201067561 in words is "seventy-five billion, two hundred one million, sixty-seven thousand, five hundred sixty-one".