20126402216 has 16 divisors (see below), whose sum is σ = 38034147840. Its totient is φ = 9983962800.

The previous prime is 20126402203. The next prime is 20126402249. The reversal of 20126402216 is 61220462102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9903710 + ... + 9905741.

It is an arithmetic number, because the mean of its divisors is an integer number (2377134240).

Almost surely, 2^20126402216 is an apocalyptic number.

It is an amenable number.

20126402216 is a deficient number, since it is larger than the sum of its proper divisors (17907745624).

20126402216 is a wasteful number, since it uses less digits than its factorization.

20126402216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19809584 (or 19809580 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20126402216 its reverse (61220462102), we get a palindrome (81346864318).

The spelling of 20126402216 in words is "twenty billion, one hundred twenty-six million, four hundred two thousand, two hundred sixteen".