21704125070 has 8 divisors (see below), whose sum is σ = 39067425144. Its totient is φ = 8681650024.

The previous prime is 21704125057. The next prime is 21704125073. The reversal of 21704125070 is 7052140712.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21704125073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085206244 + ... + 1085206263.

It is an arithmetic number, because the mean of its divisors is an integer number (4883428143).

Almost surely, 2^21704125070 is an apocalyptic number.

21704125070 is a deficient number, since it is larger than the sum of its proper divisors (17363300074).

21704125070 is a wasteful number, since it uses less digits than its factorization.

21704125070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170412514.

The product of its (nonzero) digits is 3920, while the sum is 29.

Adding to 21704125070 its reverse (7052140712), we get a palindrome (28756265782).

The spelling of 21704125070 in words is "twenty-one billion, seven hundred four million, one hundred twenty-five thousand, seventy".