10000019968 has 20 divisors (see below), whose sum is σ = 19980509670. Its totient is φ = 5000009728.

The previous prime is 10000019957. The next prime is 10000019969. The reversal of 10000019968 is 86991000001.

It can be written as a sum of positive squares in only one way, i.e., 9958443264 + 41576704 = 99792^2 + 6448^2 .

It is not an unprimeable number, because it can be changed into a prime (10000019969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9765133 + ... + 9766156.

Almost surely, 2^10000019968 is an apocalyptic number.

It is an amenable number.

10000019968 is a deficient number, since it is larger than the sum of its proper divisors (9980489702).

10000019968 is an frugal number, since it uses more digits than its factorization.

10000019968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19531307 (or 19531291 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

Adding to 10000019968 its reverse (86991000001), we get a palindrome (96991019969).

The spelling of 10000019968 in words is "ten billion, nineteen thousand, nine hundred sixty-eight".