75621417671 has 2 divisors, whose sum is σ = 75621417672. Its totient is φ = 75621417670.

The previous prime is 75621417667. The next prime is 75621417673. The reversal of 75621417671 is 17671412657.

It is a strong prime.

It is an emirp because it is prime and its reverse (17671412657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75621417671 - 2² = 75621417667 is a prime.

It is a Sophie Germain prime.

Together with 75621417673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75621417673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37810708835 + 37810708836.

It is an arithmetic number, because the mean of its divisors is an integer number (37810708836).

Almost surely, 2^75621417671 is an apocalyptic number.

75621417671 is a deficient number, since it is larger than the sum of its proper divisors (1).

75621417671 is an equidigital number, since it uses as much as digits as its factorization.

75621417671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 47.

The spelling of 75621417671 in words is "seventy-five billion, six hundred twenty-one million, four hundred seventeen thousand, six hundred seventy-one".