20127203403652 has 6 divisors (see below), whose sum is σ = 35222605956398. Its totient is φ = 10063601701824.

The previous prime is 20127203403641. The next prime is 20127203403661. The reversal of 20127203403652 is 25630430272102.

It can be written as a sum of positive squares in only one way, i.e., 17842311168256 + 2284892235396 = 4224016^2 + 1511586^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515900425453 + ... + 2515900425460.

Almost surely, 2^{20127203403652} is an apocalyptic number.

It is an amenable number.

20127203403652 is a deficient number, since it is larger than the sum of its proper divisors (15095402552746).

20127203403652 is a wasteful number, since it uses less digits than its factorization.

20127203403652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031800850917 (or 5031800850915 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

Adding to 20127203403652 its reverse (25630430272102), we get a palindrome (45757633675754).

The spelling of 20127203403652 in words is "twenty trillion, one hundred twenty-seven billion, two hundred three million, four hundred three thousand, six hundred fifty-two".