100000500001000 has 128 divisors (see below), whose sum is σ = 249958568489760. Its totient is φ = 37314084864000.

The previous prime is 100000500000977. The next prime is 100000500001009. The reversal of 100000500001000 is 100005000001.

It can be written as a sum of positive squares in 16 ways, for example, as 60000516 + 100000440000484 = 7746^2 + 10000022^2 .

It is not an unprimeable number, because it can be changed into a prime (100000500001009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24107241 + ... + 27949240.

Almost surely, 2^{100000500001000} is an apocalyptic number.

100000500001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000500001000 is an abundant number, since it is smaller than the sum of its proper divisors (149958068488760).

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

100000500001000 is a wasteful number, since it uses less digits than its factorization.

100000500001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52056632 (or 52056618 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 7.

Adding to 100000500001000 its reverse (100005000001), we get a palindrome (100100505001001).

The spelling of 100000500001000 in words is "one hundred trillion, five hundred million, one thousand".