20226661632 has 180 divisors, whose sum is σ = 60639887616. Its totient is φ = 6705607680.

The previous prime is 20226661621. The next prime is 20226661649. The reversal of 20226661632 is 23616662202.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3958023 + ... + 3963129.

Almost surely, 2^20226661632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20226661632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30319943808).

20226661632 is an abundant number, since it is smaller than the sum of its proper divisors (40413225984).

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

20226661632 is an equidigital number, since it uses as much as digits as its factorization.

20226661632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326 (or 5303 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 20226661632 in words is "twenty billion, two hundred twenty-six million, six hundred sixty-one thousand, six hundred thirty-two".