71611011 has 12 divisors (see below), whose sum is σ = 105134640. Its totient is φ = 46957680.

The previous prime is 71610971. The next prime is 71611013. The reversal of 71611011 is 11011617.

It is not a de Polignac number, because 71611011 - 2¹¹ = 71608963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71611013) 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, 64671 + ... + 65768.

It is an arithmetic number, because the mean of its divisors is an integer number (8761220).

Almost surely, 2^71611011 is an apocalyptic number.

71611011 is a deficient number, since it is larger than the sum of its proper divisors (33523629).

71611011 is a wasteful number, since it uses less digits than its factorization.

71611011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130506 (or 130503 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 18.

The square root of 71611011 is about 8462.3289347555. The cubic root of 71611011 is about 415.2662171501.

Adding to 71611011 its reverse (11011617), we get a palindrome (82622628).

The spelling of 71611011 in words is "seventy-one million, six hundred eleven thousand, eleven".