20650839616 has 189 divisors, whose sum is σ = 47759116699. Its totient is φ = 8852166400.

The previous prime is 20650839557. The next prime is 20650839623. The reversal of 20650839616 is 61693805602.

The square root of 20650839616 is 143704.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 290856861 + ... + 290856931.

Almost surely, 2^20650839616 is an apocalyptic number.

20650839616 is the 143704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20650839616

20650839616 is an abundant number, since it is smaller than the sum of its proper divisors (27108277083).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20650839616 is an equidigital number, since it uses as much as digits as its factorization.

20650839616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 20650839616 in words is "twenty billion, six hundred fifty million, eight hundred thirty-nine thousand, six hundred sixteen".