20205612330 has 32 divisors (see below), whose sum is σ = 49157769024. Its totient is φ = 5314352256.

The previous prime is 20205612289. The next prime is 20205612391. The reversal of 20205612330 is 3321650202.

It is a self number, because there is not a number n which added to its sum of digits gives 20205612330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4610964 + ... + 4615343.

It is an arithmetic number, because the mean of its divisors is an integer number (1536180282).

Almost surely, 2^20205612330 is an apocalyptic number.

20205612330 is an abundant number, since it is smaller than the sum of its proper divisors (28952156694).

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

20205612330 is a wasteful number, since it uses less digits than its factorization.

20205612330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226390.

The product of its (nonzero) digits is 2160, while the sum is 24.

The spelling of 20205612330 in words is "twenty billion, two hundred five million, six hundred twelve thousand, three hundred thirty".