20143245530 has 16 divisors (see below), whose sum is σ = 36578709864. Its totient is φ = 7985994240.

The previous prime is 20143245491. The next prime is 20143245533. The reversal of 20143245530 is 3554234102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3253903849 + 16889341681 = 57043^2 + 129959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20143245493 and 20143245502.

It is not an unprimeable number, because it can be changed into a prime (20143245533) 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, 8911811 + ... + 8914070.

Almost surely, 2^20143245530 is an apocalyptic number.

20143245530 is a deficient number, since it is larger than the sum of its proper divisors (16435464334).

20143245530 is a wasteful number, since it uses less digits than its factorization.

20143245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826001.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20143245530 its reverse (3554234102), we get a palindrome (23697479632).

The spelling of 20143245530 in words is "twenty billion, one hundred forty-three million, two hundred forty-five thousand, five hundred thirty".