71443994211 has 12 divisors (see below), whose sum is σ = 103313235792. Its totient is φ = 47575627056.

The previous prime is 71443994197. The next prime is 71443994221. The reversal of 71443994211 is 11249934417.

71443994211 is a `hidden beast` number, since 7 + 1 + 44 + 399 + 4 + 211 = 666.

It is not a de Polignac number, because 71443994211 - 2¹¹ = 71443992163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71443994221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4466776 + ... + 4482741.

It is an arithmetic number, because the mean of its divisors is an integer number (8609436316).

Almost surely, 2^71443994211 is an apocalyptic number.

71443994211 is a deficient number, since it is larger than the sum of its proper divisors (31869241581).

71443994211 is a wasteful number, since it uses less digits than its factorization.

71443994211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8950410 (or 8950407 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The spelling of 71443994211 in words is "seventy-one billion, four hundred forty-three million, nine hundred ninety-four thousand, two hundred eleven".