100115510503 has 4 divisors (see below), whose sum is σ = 100118191968. Its totient is φ = 100112829040.

The previous prime is 100115510489. The next prime is 100115510513. The reversal of 100115510503 is 305015511001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100115510503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100115510513) 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 3 ways as a sum of consecutive naturals, for example, 1283926 + ... + 1359667.

It is an arithmetic number, because the mean of its divisors is an integer number (25029547992).

Almost surely, 2^100115510503 is an apocalyptic number.

100115510503 is a deficient number, since it is larger than the sum of its proper divisors (2681465).

100115510503 is an equidigital number, since it uses as much as digits as its factorization.

100115510503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681464.

The product of its (nonzero) digits is 375, while the sum is 22.

The spelling of 100115510503 in words is "one hundred billion, one hundred fifteen million, five hundred ten thousand, five hundred three".