20081658810 has 16 divisors (see below), whose sum is σ = 48195981216. Its totient is φ = 5355109008.

The previous prime is 20081658791. The next prime is 20081658811. The reversal of 20081658810 is 1885618002.

It is a super-2 number, since 2×20081658810² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20081658811) 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, 334694284 + ... + 334694343.

It is an arithmetic number, because the mean of its divisors is an integer number (3012248826).

Almost surely, 2^20081658810 is an apocalyptic number.

20081658810 is an abundant number, since it is smaller than the sum of its proper divisors (28114322406).

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

20081658810 is a wasteful number, since it uses less digits than its factorization.

20081658810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669388637.

The product of its (nonzero) digits is 30720, while the sum is 39.

The spelling of 20081658810 in words is "twenty billion, eighty-one million, six hundred fifty-eight thousand, eight hundred ten".