100001255145 has 32 divisors (see below), whose sum is σ = 183734369280. Its totient is φ = 45933589440.

The previous prime is 100001255143. The next prime is 100001255191. The reversal of 100001255145 is 541552100001.

It is not a de Polignac number, because 100001255145 - 2¹ = 100001255143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100001255143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15946029 + ... + 15952298.

It is an arithmetic number, because the mean of its divisors is an integer number (5741699040).

Almost surely, 2^100001255145 is an apocalyptic number.

100001255145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100001255145 is a deficient number, since it is larger than the sum of its proper divisors (83733114135).

100001255145 is a wasteful number, since it uses less digits than its factorization.

100001255145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31898365.

The product of its (nonzero) digits is 1000, while the sum is 24.

Adding to 100001255145 its reverse (541552100001), we get a palindrome (641553355146).

The spelling of 100001255145 in words is "one hundred billion, one million, two hundred fifty-five thousand, one hundred forty-five".