20217412916 has 24 divisors (see below), whose sum is σ = 37271498880. Its totient is φ = 9569238912.

The previous prime is 20217412907. The next prime is 20217412937. The reversal of 20217412916 is 61921471202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3980 + ... + 201123.

It is an arithmetic number, because the mean of its divisors is an integer number (1552979120).

Almost surely, 2^20217412916 is an apocalyptic number.

It is an amenable number.

20217412916 is a deficient number, since it is larger than the sum of its proper divisors (17054085964).

20217412916 is a wasteful number, since it uses less digits than its factorization.

20217412916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206423 (or 206421 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 20217412916 in words is "twenty billion, two hundred seventeen million, four hundred twelve thousand, nine hundred sixteen".