20868215326 has 32 divisors (see below), whose sum is σ = 37897778880. Its totient is φ = 8413134336.

The previous prime is 20868215321. The next prime is 20868215363. The reversal of 20868215326 is 62351286802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20868215321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467260 + ... + 509968.

It is an arithmetic number, because the mean of its divisors is an integer number (1184305590).

Almost surely, 2^20868215326 is an apocalyptic number.

20868215326 is a deficient number, since it is larger than the sum of its proper divisors (17029563554).

20868215326 is a wasteful number, since it uses less digits than its factorization.

20868215326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44788.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 20868215326 in words is "twenty billion, eight hundred sixty-eight million, two hundred fifteen thousand, three hundred twenty-six".