75871691400917 has 2 divisors, whose sum is σ = 75871691400918. Its totient is φ = 75871691400916.

The previous prime is 75871691400877. The next prime is 75871691401021. The reversal of 75871691400917 is 71900419617857.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75345854679601 + 525836721316 = 8680199^2 + 725146^2 .

It is a cyclic number.

It is not a de Polignac number, because 75871691400917 - 2¹⁰ = 75871691399893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75871691400317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37935845700458 + 37935845700459.

It is an arithmetic number, because the mean of its divisors is an integer number (37935845700459).

Almost surely, 2^{75871691400917} is an apocalyptic number.

It is an amenable number.

75871691400917 is a deficient number, since it is larger than the sum of its proper divisors (1).

75871691400917 is an equidigital number, since it uses as much as digits as its factorization.

75871691400917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26671680, while the sum is 65.

The spelling of 75871691400917 in words is "seventy-five trillion, eight hundred seventy-one billion, six hundred ninety-one million, four hundred thousand, nine hundred seventeen".