20308530064 has 45 divisors (see below), whose sum is σ = 41159502993. Its totient is φ = 9706504896.

The previous prime is 20308530049. The next prime is 20308530091. The reversal of 20308530064 is 46003580302.

The square root of 20308530064 is 142508.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6871083664 + 13437446400 = 82892^2 + 115920^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13109962 + ... + 13111510.

Almost surely, 2^20308530064 is an apocalyptic number.

20308530064 is the 142508-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20308530064

20308530064 is an abundant number, since it is smaller than the sum of its proper divisors (20850972929).

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

20308530064 is an frugal number, since it uses more digits than its factorization.

20308530064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20308530064 in words is "twenty billion, three hundred eight million, five hundred thirty thousand, sixty-four".