100020810187 has 8 divisors (see below), whose sum is σ = 100115040816. Its totient is φ = 99926625792.

The previous prime is 100020810107. The next prime is 100020810191. The reversal of 100020810187 is 781018020001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100020810187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020810107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5469363 + ... + 5487619.

It is an arithmetic number, because the mean of its divisors is an integer number (12514380102).

Almost surely, 2^100020810187 is an apocalyptic number.

100020810187 is a deficient number, since it is larger than the sum of its proper divisors (94230629).

100020810187 is a wasteful number, since it uses less digits than its factorization.

100020810187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23117.

The product of its (nonzero) digits is 896, while the sum is 28.

Adding to 100020810187 its reverse (781018020001), we get a palindrome (881038830188).

The spelling of 100020810187 in words is "one hundred billion, twenty million, eight hundred ten thousand, one hundred eighty-seven".