20532444330 has 64 divisors (see below), whose sum is σ = 50603470848. Its totient is φ = 5329658880.

The previous prime is 20532444307. The next prime is 20532444337. The reversal of 20532444330 is 3344423502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20532444337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151090 + ... + 252770.

It is an arithmetic number, because the mean of its divisors is an integer number (790679232).

Almost surely, 2^20532444330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20532444330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25301735424).

20532444330 is an abundant number, since it is smaller than the sum of its proper divisors (30071026518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20532444330 is a wasteful number, since it uses less digits than its factorization.

20532444330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101871.

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 20532444330 its reverse (3344423502), we get a palindrome (23876867832).

The spelling of 20532444330 in words is "twenty billion, five hundred thirty-two million, four hundred forty-four thousand, three hundred thirty".