20102243530 has 8 divisors (see below), whose sum is σ = 36184038372. Its totient is φ = 8040897408.

The previous prime is 20102243509. The next prime is 20102243563. The reversal of 20102243530 is 3534220102.

It can be written as a sum of positive squares in 2 ways, for example, as 19786079569 + 316163961 = 140663^2 + 17781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005112167 + ... + 1005112186.

Almost surely, 2^20102243530 is an apocalyptic number.

20102243530 is a deficient number, since it is larger than the sum of its proper divisors (16081794842).

20102243530 is a wasteful number, since it uses less digits than its factorization.

20102243530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010224360.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20102243530 its reverse (3534220102), we get a palindrome (23636463632).

The spelling of 20102243530 in words is "twenty billion, one hundred two million, two hundred forty-three thousand, five hundred thirty".