20004655650 has 384 divisors, whose sum is σ = 62507427840. Its totient is φ = 4130058240.

The previous prime is 20004655577. The next prime is 20004655661. The reversal of 20004655650 is 5655640002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 51425656 + ... + 51426044.

It is an arithmetic number, because the mean of its divisors is an integer number (162779760).

Almost surely, 2^20004655650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004655650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31253713920).

20004655650 is an abundant number, since it is smaller than the sum of its proper divisors (42502772190).

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

20004655650 is a wasteful number, since it uses less digits than its factorization.

20004655650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 20004655650 in words is "twenty billion, four million, six hundred fifty-five thousand, six hundred fifty".