71201039522 has 6 divisors (see below), whose sum is σ = 106802125329. Its totient is φ = 35600331080.

The previous prime is 71201039521. The next prime is 71201039549. The reversal of 71201039522 is 22593010217.

It can be written as a sum of positive squares in 2 ways, for example, as 68346167761 + 2854871761 = 261431^2 + 53431^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188681.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71201039521) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 283022 + ... + 471702.

Almost surely, 2^71201039522 is an apocalyptic number.

71201039522 is a deficient number, since it is larger than the sum of its proper divisors (35601085807).

71201039522 is an frugal number, since it uses more digits than its factorization.

71201039522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377364 (or 188683 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

Multiplying 71201039522 by its sum of digits (32), we get a square (2278433264704 = 1509448²).

Adding to 71201039522 its reverse (22593010217), we get a palindrome (93794049739).

The spelling of 71201039522 in words is "seventy-one billion, two hundred one million, thirty-nine thousand, five hundred twenty-two".