75686868671 has 2 divisors, whose sum is σ = 75686868672. Its totient is φ = 75686868670.

The previous prime is 75686868623. The next prime is 75686868707. The reversal of 75686868671 is 17686868657.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75686868671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75686868071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37843434335 + 37843434336.

It is an arithmetic number, because the mean of its divisors is an integer number (37843434336).

Almost surely, 2^75686868671 is an apocalyptic number.

75686868671 is a deficient number, since it is larger than the sum of its proper divisors (1).

75686868671 is an equidigital number, since it uses as much as digits as its factorization.

75686868671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 68.

The spelling of 75686868671 in words is "seventy-five billion, six hundred eighty-six million, eight hundred sixty-eight thousand, six hundred seventy-one".