71414209991 has 2 divisors, whose sum is σ = 71414209992. Its totient is φ = 71414209990.

The previous prime is 71414209987. The next prime is 71414210003. The reversal of 71414209991 is 19990241417.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71414209991 - 2² = 71414209987 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71414209931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35707104995 + 35707104996.

It is an arithmetic number, because the mean of its divisors is an integer number (35707104996).

Almost surely, 2^71414209991 is an apocalyptic number.

71414209991 is a deficient number, since it is larger than the sum of its proper divisors (1).

71414209991 is an equidigital number, since it uses as much as digits as its factorization.

71414209991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 71414209991 in words is "seventy-one billion, four hundred fourteen million, two hundred nine thousand, nine hundred ninety-one".