20209390910 has 32 divisors (see below), whose sum is σ = 38155268160. Its totient is φ = 7692208128.

The previous prime is 20209390889. The next prime is 20209390913. The reversal of 20209390910 is 1909390202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20209390913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183245 + ... + 272024.

It is an arithmetic number, because the mean of its divisors is an integer number (1192352130).

Almost surely, 2^20209390910 is an apocalyptic number.

20209390910 is a deficient number, since it is larger than the sum of its proper divisors (17945877250).

20209390910 is a wasteful number, since it uses less digits than its factorization.

20209390910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455492.

The product of its (nonzero) digits is 8748, while the sum is 35.

The spelling of 20209390910 in words is "twenty billion, two hundred nine million, three hundred ninety thousand, nine hundred ten".