20301000520 has 16 divisors (see below), whose sum is σ = 45677251260. Its totient is φ = 8120400192.

The previous prime is 20301000443. The next prime is 20301000521. The reversal of 20301000520 is 2500010302.

It can be written as a sum of positive squares in 2 ways, for example, as 20273772996 + 27227524 = 142386^2 + 5218^2 .

It is a super-2 number, since 2×20301000520² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20301000520.

It is not an unprimeable number, because it can be changed into a prime (20301000521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253762467 + ... + 253762546.

Almost surely, 2^20301000520 is an apocalyptic number.

20301000520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301000520 is an abundant number, since it is smaller than the sum of its proper divisors (25376250740).

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

20301000520 is a wasteful number, since it uses less digits than its factorization.

20301000520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507525024 (or 507525020 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

Adding to 20301000520 its reverse (2500010302), we get a palindrome (22801010822).

The spelling of 20301000520 in words is "twenty billion, three hundred one million, five hundred twenty", and thus it is an aban number.