21568794703 has 16 divisors (see below), whose sum is σ = 22037581440. Its totient is φ = 21104820000.

The previous prime is 21568794673. The next prime is 21568794707. The reversal of 21568794703 is 30749786512.

It is a cyclic number.

It is not a de Polignac number, because 21568794703 - 2¹⁷ = 21568663631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21568794707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7044793 + ... + 7047853.

It is an arithmetic number, because the mean of its divisors is an integer number (1377348840).

It is a 1-persistent number, because it is pandigital, but 2⋅21568794703 = 43137589406 is not.

Almost surely, 2^21568794703 is an apocalyptic number.

21568794703 is a deficient number, since it is larger than the sum of its proper divisors (468786737).

21568794703 is a wasteful number, since it uses less digits than its factorization.

21568794703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 21568794703 in words is "twenty-one billion, five hundred sixty-eight million, seven hundred ninety-four thousand, seven hundred three".