71111252830 has 32 divisors (see below), whose sum is σ = 128826850464. Its totient is φ = 28261341696.

The previous prime is 71111252827. The next prime is 71111252893. The reversal of 71111252830 is 3825211117.

It is a junction number, because it is equal to n+sod(n) for n = 71111252792 and 71111252801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055434 + ... + 1120786.

It is an arithmetic number, because the mean of its divisors is an integer number (4025839077).

Almost surely, 2^71111252830 is an apocalyptic number.

71111252830 is a deficient number, since it is larger than the sum of its proper divisors (57715597634).

71111252830 is a wasteful number, since it uses less digits than its factorization.

71111252830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66060.

The product of its (nonzero) digits is 3360, while the sum is 31.

Adding to 71111252830 its reverse (3825211117), we get a palindrome (74936463947).

The spelling of 71111252830 in words is "seventy-one billion, one hundred eleven million, two hundred fifty-two thousand, eight hundred thirty".