20552444311 has 12 divisors (see below), whose sum is σ = 23912366400. Its totient is φ = 17613123360.

The previous prime is 20552444291. The next prime is 20552444323. The reversal of 20552444311 is 11344425502.

It is a de Polignac number, because none of the positive numbers 2^k-20552444311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552444711) 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, 250746 + ... + 322456.

It is an arithmetic number, because the mean of its divisors is an integer number (1992697200).

Almost surely, 2^20552444311 is an apocalyptic number.

20552444311 is a deficient number, since it is larger than the sum of its proper divisors (3359922089).

20552444311 is an equidigital number, since it uses as much as digits as its factorization.

20552444311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77574 (or 77567 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20552444311 its reverse (11344425502), we get a palindrome (31896869813).

The spelling of 20552444311 in words is "twenty billion, five hundred fifty-two million, four hundred forty-four thousand, three hundred eleven".