21352204707 has 16 divisors (see below), whose sum is σ = 29392699392. Its totient is φ = 13773404160.

The previous prime is 21352204703. The next prime is 21352204739. The reversal of 21352204707 is 70740225312.

It is not a de Polignac number, because 21352204707 - 2² = 21352204703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21352204703) 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 15 ways as a sum of consecutive naturals, for example, 723678 + ... + 752604.

It is an arithmetic number, because the mean of its divisors is an integer number (1837043712).

Almost surely, 2^21352204707 is an apocalyptic number.

21352204707 is a deficient number, since it is larger than the sum of its proper divisors (8040494685).

21352204707 is a wasteful number, since it uses less digits than its factorization.

21352204707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36898.

The product of its (nonzero) digits is 23520, while the sum is 33.

The spelling of 21352204707 in words is "twenty-one billion, three hundred fifty-two million, two hundred four thousand, seven hundred seven".