20700111908 has 24 divisors (see below), whose sum is σ = 42519150912. Its totient is φ = 8631706464.

The previous prime is 20700111899. The next prime is 20700111919. The reversal of 20700111908 is 80911100702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9989366 + ... + 9991437.

It is an arithmetic number, because the mean of its divisors is an integer number (1771631288).

Almost surely, 2^20700111908 is an apocalyptic number.

20700111908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20700111908 is an abundant number, since it is smaller than the sum of its proper divisors (21819039004).

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

20700111908 is a wasteful number, since it uses less digits than its factorization.

20700111908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19980851 (or 19980849 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 20700111908 in words is "twenty billion, seven hundred million, one hundred eleven thousand, nine hundred eight".