20320010320 has 40 divisors (see below), whose sum is σ = 47533895136. Its totient is φ = 8078133888.

The previous prime is 20320010299. The next prime is 20320010329. The reversal of 20320010320 is 2301002302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 20320010320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320010329) 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, 766102 + ... + 792181.

Almost surely, 2^20320010320 is an apocalyptic number.

20320010320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20320010320 is an abundant number, since it is smaller than the sum of its proper divisors (27213884816).

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

20320010320 is a wasteful number, since it uses less digits than its factorization.

20320010320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558459 (or 1558453 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20320010320 its reverse (2301002302), we get a palindrome (22621012622).

The spelling of 20320010320 in words is "twenty billion, three hundred twenty million, ten thousand, three hundred twenty".