20787934110 has 16 divisors (see below), whose sum is σ = 49891041936. Its totient is φ = 5543449088.

The previous prime is 20787934099. The next prime is 20787934117. The reversal of 20787934110 is 1143978702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20787934117) 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, 346465539 + ... + 346465598.

It is an arithmetic number, because the mean of its divisors is an integer number (3118190121).

Almost surely, 2^20787934110 is an apocalyptic number.

20787934110 is an abundant number, since it is smaller than the sum of its proper divisors (29103107826).

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

20787934110 is a wasteful number, since it uses less digits than its factorization.

20787934110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692931147.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 20787934110 in words is "twenty billion, seven hundred eighty-seven million, nine hundred thirty-four thousand, one hundred ten".