20470123008 has 400 divisors, whose sum is σ = 63634364640. Its totient is φ = 6547267584.

The previous prime is 20470122989. The next prime is 20470123021. The reversal of 20470123008 is 80032107402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 147267003 + ... + 147267141.

Almost surely, 2^20470123008 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 20470123008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31817182320).

20470123008 is an abundant number, since it is smaller than the sum of its proper divisors (43164241632).

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

20470123008 is an equidigital number, since it uses as much as digits as its factorization.

20470123008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The spelling of 20470123008 in words is "twenty billion, four hundred seventy million, one hundred twenty-three thousand, eight".