201320322472 has 8 divisors (see below), whose sum is σ = 377475604650. Its totient is φ = 100660161232.

The previous prime is 201320322457. The next prime is 201320322473. The reversal of 201320322472 is 274223023102.

It can be written as a sum of positive squares in only one way, i.e., 198571836996 + 2748485476 = 445614^2 + 52426^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 201320322472.

It is not an unprimeable number, because it can be changed into a prime (201320322473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12582520147 + ... + 12582520162.

Almost surely, 2^201320322472 is an apocalyptic number.

It is an amenable number.

201320322472 is a deficient number, since it is larger than the sum of its proper divisors (176155282178).

201320322472 is a wasteful number, since it uses less digits than its factorization.

201320322472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25165040315 (or 25165040311 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 201320322472 its reverse (274223023102), we get a palindrome (475543345574).

The spelling of 201320322472 in words is "two hundred one billion, three hundred twenty million, three hundred twenty-two thousand, four hundred seventy-two".