21070106708 has 48 divisors (see below), whose sum is σ = 44466589440. Its totient is φ = 8540361984.

The previous prime is 21070106689. The next prime is 21070106779. The reversal of 21070106708 is 80760107012.

It is a congruent number.

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, 126491 + ... + 241122.

It is an arithmetic number, because the mean of its divisors is an integer number (926387280).

Almost surely, 2^21070106708 is an apocalyptic number.

21070106708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21070106708 is an abundant number, since it is smaller than the sum of its proper divisors (23396482732).

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

21070106708 is a wasteful number, since it uses less digits than its factorization.

21070106708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367736 (or 367734 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The spelling of 21070106708 in words is "twenty-one billion, seventy million, one hundred six thousand, seven hundred eight".