21320411526326 has 32 divisors (see below), whose sum is σ = 35163692307072. Its totient is φ = 9614584893760.

The previous prime is 21320411526317. The next prime is 21320411526343. The reversal of 21320411526326 is 62362511402312.

It is a self number, because there is not a number n which added to its sum of digits gives 21320411526326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2902625 + ... + 7146051.

It is an arithmetic number, because the mean of its divisors is an integer number (1098865384596).

Almost surely, 2^{21320411526326} is an apocalyptic number.

21320411526326 is a deficient number, since it is larger than the sum of its proper divisors (13843280780746).

21320411526326 is a wasteful number, since it uses less digits than its factorization.

21320411526326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245244.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 21320411526326 its reverse (62362511402312), we get a palindrome (83682922928638).

The spelling of 21320411526326 in words is "twenty-one trillion, three hundred twenty billion, four hundred eleven million, five hundred twenty-six thousand, three hundred twenty-six".