20010020346 has 12 divisors (see below), whose sum is σ = 43355044122. Its totient is φ = 6670006776.

The previous prime is 20010020281. The next prime is 20010020347. The reversal of 20010020346 is 64302001002.

It is a happy number.

20010020346 is a `hidden beast` number, since 200 + 100 + 20 + 346 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14789235321 + 5220785025 = 121611^2 + 72255^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1111667797 = 20010020346 / (2 + 0 + 0 + 1 + 0 + 0 + 2 + 0 + 3 + 4 + 6).

It is not an unprimeable number, because it can be changed into a prime (20010020347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555833881 + ... + 555833916.

Almost surely, 2^20010020346 is an apocalyptic number.

20010020346 is an abundant number, since it is smaller than the sum of its proper divisors (23345023776).

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

20010020346 is a wasteful number, since it uses less digits than its factorization.

20010020346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111667805 (or 1111667802 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20010020346 its reverse (64302001002), we get a palindrome (84312021348).

The spelling of 20010020346 in words is "twenty billion, ten million, twenty thousand, three hundred forty-six".