21403106570 has 16 divisors (see below), whose sum is σ = 38563417440. Its totient is φ = 8552836944.

The previous prime is 21403106561. The next prime is 21403106587. The reversal of 21403106570 is 7560130412.

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, 1040012 + ... + 1060391.

It is an arithmetic number, because the mean of its divisors is an integer number (2410213590).

Almost surely, 2^21403106570 is an apocalyptic number.

21403106570 is a deficient number, since it is larger than the sum of its proper divisors (17160310870).

21403106570 is a wasteful number, since it uses less digits than its factorization.

21403106570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101429.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 21403106570 its reverse (7560130412), we get a palindrome (28963236982).

The spelling of 21403106570 in words is "twenty-one billion, four hundred three million, one hundred six thousand, five hundred seventy".