71006203220 has 24 divisors (see below), whose sum is σ = 149178897504. Its totient is φ = 28389934496.

The previous prime is 71006203189. The next prime is 71006203249. The reversal of 71006203220 is 2230260017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737702 + ... + 828381.

It is an arithmetic number, because the mean of its divisors is an integer number (6215787396).

Almost surely, 2^71006203220 is an apocalyptic number.

It is an amenable number.

71006203220 is an abundant number, since it is smaller than the sum of its proper divisors (78172694284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71006203220 is a wasteful number, since it uses less digits than its factorization.

71006203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568359 (or 1568357 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 71006203220 its reverse (2230260017), we get a palindrome (73236463237).

The spelling of 71006203220 in words is "seventy-one billion, six million, two hundred three thousand, two hundred twenty".