21304232662 has 16 divisors (see below), whose sum is σ = 33252057792. Its totient is φ = 10228766080.

The previous prime is 21304232603. The next prime is 21304232707. The reversal of 21304232662 is 26623240312.

It is a congruent number.

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, 2133139 + ... + 2143102.

It is an arithmetic number, because the mean of its divisors is an integer number (2078253612).

Almost surely, 2^21304232662 is an apocalyptic number.

21304232662 is a deficient number, since it is larger than the sum of its proper divisors (11947825130).

21304232662 is a wasteful number, since it uses less digits than its factorization.

21304232662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276343.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 21304232662 its reverse (26623240312), we get a palindrome (47927472974).

The spelling of 21304232662 in words is "twenty-one billion, three hundred four million, two hundred thirty-two thousand, six hundred sixty-two".