20010100008 has 16 divisors (see below), whose sum is σ = 50025250080. Its totient is φ = 6670033328.

The previous prime is 20010100001. The next prime is 20010100013. The reversal of 20010100008 is 80000101002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20010099966 and 20010100002.

It is not an unprimeable number, because it can be changed into a prime (20010100001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416877060 + ... + 416877107.

It is an arithmetic number, because the mean of its divisors is an integer number (3126578130).

Almost surely, 2^20010100008 is an apocalyptic number.

It is an amenable number.

20010100008 is an abundant number, since it is smaller than the sum of its proper divisors (30015150072).

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

20010100008 is a wasteful number, since it uses less digits than its factorization.

20010100008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833754176 (or 833754172 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The spelling of 20010100008 in words is "twenty billion, ten million, one hundred thousand, eight".