20535334105 has 24 divisors (see below), whose sum is σ = 29169846216. Its totient is φ = 13785953280.

The previous prime is 20535334051. The next prime is 20535334109. The reversal of 20535334105 is 50143353502.

It can be written as a sum of positive squares in 4 ways, for example, as 1300972761 + 19234361344 = 36069^2 + 138688^2 .

It is not a de Polignac number, because 20535334105 - 2²¹ = 20533236953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20535334109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297624 + ... + 1313353.

It is an arithmetic number, because the mean of its divisors is an integer number (1215410259).

Almost surely, 2^20535334105 is an apocalyptic number.

It is an amenable number.

20535334105 is a deficient number, since it is larger than the sum of its proper divisors (8634512111).

20535334105 is a wasteful number, since it uses less digits than its factorization.

20535334105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611017 (or 2611006 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 20535334105 its reverse (50143353502), we get a palindrome (70678687607).

The spelling of 20535334105 in words is "twenty billion, five hundred thirty-five million, three hundred thirty-four thousand, one hundred five".