20372722650 has 648 divisors, whose sum is σ = 71085137760. Its totient is φ = 4161991680.

The previous prime is 20372722637. The next prime is 20372722661. The reversal of 20372722650 is 5622727302.

20372722650 is a `hidden beast` number, since 20 + 372 + 7 + 2 + 265 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 323 ways as a sum of consecutive naturals, for example, 146566281 + ... + 146566419.

Almost surely, 2^20372722650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20372722650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35542568880).

20372722650 is an abundant number, since it is smaller than the sum of its proper divisors (50712415110).

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

20372722650 is a wasteful number, since it uses less digits than its factorization.

20372722650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The spelling of 20372722650 in words is "twenty billion, three hundred seventy-two million, seven hundred twenty-two thousand, six hundred fifty".