20435357234 has 16 divisors (see below), whose sum is σ = 31237313688. Its totient is φ = 10022992512.

The previous prime is 20435357221. The next prime is 20435357237. The reversal of 20435357234 is 43275353402.

It can be written as a sum of positive squares in 4 ways, for example, as 8367675625 + 12067681609 = 91475^2 + 109853^2 .

It is a super-2 number, since 2×20435357234² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20435357237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663014 + ... + 693150.

Almost surely, 2^20435357234 is an apocalyptic number.

20435357234 is a deficient number, since it is larger than the sum of its proper divisors (10801956454).

20435357234 is a wasteful number, since it uses less digits than its factorization.

20435357234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36589.

The product of its (nonzero) digits is 302400, while the sum is 38.

The spelling of 20435357234 in words is "twenty billion, four hundred thirty-five million, three hundred fifty-seven thousand, two hundred thirty-four".