20435145244 has 12 divisors (see below), whose sum is σ = 35774209800. Its totient is φ = 10213942448.

The previous prime is 20435145233. The next prime is 20435145299. The reversal of 20435145244 is 44254153402.

It is a super-2 number, since 2×20435145244² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 894859 + ... + 917410.

It is an arithmetic number, because the mean of its divisors is an integer number (2981184150).

Almost surely, 2^20435145244 is an apocalyptic number.

It is an amenable number.

20435145244 is a deficient number, since it is larger than the sum of its proper divisors (15339064556).

20435145244 is a wasteful number, since it uses less digits than its factorization.

20435145244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815092 (or 1815090 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 20435145244 its reverse (44254153402), we get a palindrome (64689298646).

The spelling of 20435145244 in words is "twenty billion, four hundred thirty-five million, one hundred forty-five thousand, two hundred forty-four".