71111111012 has 48 divisors (see below), whose sum is σ = 127784442240. Its totient is φ = 34614585600.

The previous prime is 71111111009. The next prime is 71111111023. The reversal of 71111111012 is 21011111117.

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, 11071562 + ... + 11077982.

It is an arithmetic number, because the mean of its divisors is an integer number (2662175880).

Almost surely, 2^71111111012 is an apocalyptic number.

It is an amenable number.

71111111012 is a deficient number, since it is larger than the sum of its proper divisors (56673331228).

71111111012 is a wasteful number, since it uses less digits than its factorization.

71111111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932 (or 6930 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 17.

Adding to 71111111012 its reverse (21011111117), we get a palindrome (92122222129).

The spelling of 71111111012 in words is "seventy-one billion, one hundred eleven million, one hundred eleven thousand, twelve".