21343601032436 has 24 divisors (see below), whose sum is σ = 37646172615744. Its totient is φ = 10587593906240.

The previous prime is 21343601032427. The next prime is 21343601032489. The reversal of 21343601032436 is 63423010634312.

It is a self number, because there is not a number n which added to its sum of digits gives 21343601032436.

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, 3247865 + ... + 7296288.

It is an arithmetic number, because the mean of its divisors is an integer number (1568590525656).

Almost surely, 2^{21343601032436} is an apocalyptic number.

It is an amenable number.

21343601032436 is a deficient number, since it is larger than the sum of its proper divisors (16302571583308).

21343601032436 is a wasteful number, since it uses less digits than its factorization.

21343601032436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548151 (or 10548149 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

Adding to 21343601032436 its reverse (63423010634312), we get a palindrome (84766611666748).

The spelling of 21343601032436 in words is "twenty-one trillion, three hundred forty-three billion, six hundred one million, thirty-two thousand, four hundred thirty-six".