201560220071 has 12 divisors (see below), whose sum is σ = 235777898520. Its totient is φ = 171800722800.

The previous prime is 201560219969. The next prime is 201560220107. The reversal of 201560220071 is 170022065102.

It is a de Polignac number, because none of the positive numbers 2^k-201560220071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201560220071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201560223071) 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, 11481380 + ... + 11498921.

It is an arithmetic number, because the mean of its divisors is an integer number (19648158210).

Almost surely, 2^201560220071 is an apocalyptic number.

201560220071 is a deficient number, since it is larger than the sum of its proper divisors (34217678449).

201560220071 is a wasteful number, since it uses less digits than its factorization.

201560220071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22980494 (or 22980487 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 201560220071 its reverse (170022065102), we get a palindrome (371582285173).

The spelling of 201560220071 in words is "two hundred one billion, five hundred sixty million, two hundred twenty thousand, seventy-one".