20191009100010 has 64 divisors (see below), whose sum is σ = 57788925437952. Its totient is φ = 4414431802176.

The previous prime is 20191009099927. The next prime is 20191009100011. The reversal of 20191009100010 is 1000190019102.

It is not an unprimeable number, because it can be changed into a prime (20191009100011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2090161744 + ... + 2090171403.

It is an arithmetic number, because the mean of its divisors is an integer number (902951959968).

Almost surely, 2^{20191009100010} is an apocalyptic number.

20191009100010 is an abundant number, since it is smaller than the sum of its proper divisors (37597916337942).

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

20191009100010 is a wasteful number, since it uses less digits than its factorization.

20191009100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180333187.

The product of its (nonzero) digits is 162, while the sum is 24.

Adding to 20191009100010 its reverse (1000190019102), we get a palindrome (21191199119112).

The spelling of 20191009100010 in words is "twenty trillion, one hundred ninety-one billion, nine million, one hundred thousand, ten".