20235435344 has 10 divisors (see below), whose sum is σ = 39206156010. Its totient is φ = 10117717664.

The previous prime is 20235435343. The next prime is 20235435391. The reversal of 20235435344 is 44353453202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18174275344 + 2061160000 = 134812^2 + 45400^2 .

It is a super-2 number, since 2×20235435344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235435343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632357339 + ... + 632357370.

It is an arithmetic number, because the mean of its divisors is an integer number (3920615601).

Almost surely, 2^20235435344 is an apocalyptic number.

It is an amenable number.

20235435344 is a deficient number, since it is larger than the sum of its proper divisors (18970720666).

20235435344 is a wasteful number, since it uses less digits than its factorization.

20235435344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264714717 (or 1264714711 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 20235435344 its reverse (44353453202), we get a palindrome (64588888546).

The spelling of 20235435344 in words is "twenty billion, two hundred thirty-five million, four hundred thirty-five thousand, three hundred forty-four".