75955509947 has 2 divisors, whose sum is σ = 75955509948. Its totient is φ = 75955509946.

The previous prime is 75955509871. The next prime is 75955509991. The reversal of 75955509947 is 74990555957.

It is a strong prime.

It is an emirp because it is prime and its reverse (74990555957) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75955509947 - 2²⁰ = 75954461371 is a prime.

It is not a weakly prime, because it can be changed into another prime (75955509547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37977754973 + 37977754974.

It is an arithmetic number, because the mean of its divisors is an integer number (37977754974).

Almost surely, 2^75955509947 is an apocalyptic number.

75955509947 is a deficient number, since it is larger than the sum of its proper divisors (1).

75955509947 is an equidigital number, since it uses as much as digits as its factorization.

75955509947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89302500, while the sum is 65.

The spelling of 75955509947 in words is "seventy-five billion, nine hundred fifty-five million, five hundred nine thousand, nine hundred forty-seven".