21004337470 has 8 divisors (see below), whose sum is σ = 37807807464. Its totient is φ = 8401734984.

The previous prime is 21004337381. The next prime is 21004337483. The reversal of 21004337470 is 7473340012.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050216864 + ... + 1050216883.

It is an arithmetic number, because the mean of its divisors is an integer number (4725975933).

Almost surely, 2^21004337470 is an apocalyptic number.

21004337470 is a deficient number, since it is larger than the sum of its proper divisors (16803469994).

21004337470 is a wasteful number, since it uses less digits than its factorization.

21004337470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100433754.

The product of its (nonzero) digits is 14112, while the sum is 31.

Adding to 21004337470 its reverse (7473340012), we get a palindrome (28477677482).

The spelling of 21004337470 in words is "twenty-one billion, four million, three hundred thirty-seven thousand, four hundred seventy".