20552364466 has 4 divisors (see below), whose sum is σ = 30828546702. Its totient is φ = 10276182232.

The previous prime is 20552364461. The next prime is 20552364473. The reversal of 20552364466 is 66446325502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19916265625 + 636098841 = 141125^2 + 25221^2 .

It is not an unprimeable number, because it can be changed into a prime (20552364461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5138091115 + ... + 5138091118.

Almost surely, 2^20552364466 is an apocalyptic number.

20552364466 is a deficient number, since it is larger than the sum of its proper divisors (10276182236).

20552364466 is a wasteful number, since it uses less digits than its factorization.

20552364466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276182235.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 20552364466 its reverse (66446325502), we get a palindrome (86998689968).

The spelling of 20552364466 in words is "twenty billion, five hundred fifty-two million, three hundred sixty-four thousand, four hundred sixty-six".