71541755671 has 2 divisors, whose sum is σ = 71541755672. Its totient is φ = 71541755670.

The previous prime is 71541755657. The next prime is 71541755767. The reversal of 71541755671 is 17655714517.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71541755671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71541755071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35770877835 + 35770877836.

It is an arithmetic number, because the mean of its divisors is an integer number (35770877836).

Almost surely, 2^71541755671 is an apocalyptic number.

71541755671 is a deficient number, since it is larger than the sum of its proper divisors (1).

71541755671 is an equidigital number, since it uses as much as digits as its factorization.

71541755671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1029000, while the sum is 49.

The spelling of 71541755671 in words is "seventy-one billion, five hundred forty-one million, seven hundred fifty-five thousand, six hundred seventy-one".