20100550312 has 8 divisors (see below), whose sum is σ = 37688531850. Its totient is φ = 10050275152.

The previous prime is 20100550307. The next prime is 20100550313. The reversal of 20100550312 is 21305500102.

It can be written as a sum of positive squares in only one way, i.e., 19542362436 + 558187876 = 139794^2 + 23626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20100550312.

It is not an unprimeable number, because it can be changed into a prime (20100550313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256284387 + ... + 1256284402.

Almost surely, 2^20100550312 is an apocalyptic number.

It is an amenable number.

20100550312 is a deficient number, since it is larger than the sum of its proper divisors (17587981538).

20100550312 is a wasteful number, since it uses less digits than its factorization.

20100550312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512568795 (or 2512568791 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The spelling of 20100550312 in words is "twenty billion, one hundred million, five hundred fifty thousand, three hundred twelve".