20010544634 has 4 divisors (see below), whose sum is σ = 30015816954. Its totient is φ = 10005272316.

The previous prime is 20010544579. The next prime is 20010544651. The reversal of 20010544634 is 43644501002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11013453025 + 8997091609 = 104945^2 + 94853^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20010544597 and 20010544606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002636157 + ... + 5002636160.

Almost surely, 2^20010544634 is an apocalyptic number.

20010544634 is a deficient number, since it is larger than the sum of its proper divisors (10005272320).

20010544634 is a wasteful number, since it uses less digits than its factorization.

20010544634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005272319.

The product of its (nonzero) digits is 11520, while the sum is 29.

The spelling of 20010544634 in words is "twenty billion, ten million, five hundred forty-four thousand, six hundred thirty-four".