71541050891 has 2 divisors, whose sum is σ = 71541050892. Its totient is φ = 71541050890.

The previous prime is 71541050863. The next prime is 71541050909. The reversal of 71541050891 is 19805014517.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71541050891 - 2³⁰ = 70467309067 is a prime.

It is not a weakly prime, because it can be changed into another prime (71141050891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35770525445 + 35770525446.

It is an arithmetic number, because the mean of its divisors is an integer number (35770525446).

Almost surely, 2^71541050891 is an apocalyptic number.

71541050891 is a deficient number, since it is larger than the sum of its proper divisors (1).

71541050891 is an equidigital number, since it uses as much as digits as its factorization.

71541050891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 41.

The spelling of 71541050891 in words is "seventy-one billion, five hundred forty-one million, fifty thousand, eight hundred ninety-one".