20001010004 has 6 divisors (see below), whose sum is σ = 35001767514. Its totient is φ = 10000505000.

The previous prime is 20001009953. The next prime is 20001010021. The reversal of 20001010004 is 40001010002.

It can be written as a sum of positive squares in only one way, i.e., 10434213904 + 9566796100 = 102148^2 + 97810^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20001009973 and 20001010000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500126247 + ... + 2500126254.

It is an arithmetic number, because the mean of its divisors is an integer number (5833627919).

Almost surely, 2^20001010004 is an apocalyptic number.

It is an amenable number.

20001010004 is a deficient number, since it is larger than the sum of its proper divisors (15000757510).

20001010004 is a wasteful number, since it uses less digits than its factorization.

20001010004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000252505 (or 5000252503 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20001010004 its reverse (40001010002), we get a palindrome (60002020006).

The spelling of 20001010004 in words is "twenty billion, one million, ten thousand, four".