21107070353 has 8 divisors (see below), whose sum is σ = 22183224000. Its totient is φ = 20044121328.

The previous prime is 21107070337. The next prime is 21107070401. The reversal of 21107070353 is 35307070112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21107070353 - 2⁴ = 21107070337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21107072353) 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, 3297878 + ... + 3304271.

It is an arithmetic number, because the mean of its divisors is an integer number (2772903000).

Almost surely, 2^21107070353 is an apocalyptic number.

21107070353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21107070353 is a deficient number, since it is larger than the sum of its proper divisors (1076153647).

21107070353 is a wasteful number, since it uses less digits than its factorization.

21107070353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602311.

The product of its (nonzero) digits is 4410, while the sum is 29.

The spelling of 21107070353 in words is "twenty-one billion, one hundred seven million, seventy thousand, three hundred fifty-three".