100540342503 has 16 divisors (see below), whose sum is σ = 148964339200. Its totient is φ = 67019837400.

The previous prime is 100540342499. The next prime is 100540342517. The reversal of 100540342503 is 305243045001.

100540342503 is a `hidden beast` number, since 1 + 0 + 0 + 5 + 403 + 4 + 250 + 3 = 666.

It is not a de Polignac number, because 100540342503 - 2² = 100540342499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100540342603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71778 + ... + 454128.

It is an arithmetic number, because the mean of its divisors is an integer number (9310271200).

Almost surely, 2^100540342503 is an apocalyptic number.

100540342503 is a deficient number, since it is larger than the sum of its proper divisors (48423996697).

100540342503 is an equidigital number, since it uses as much as digits as its factorization.

100540342503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392099 (or 392093 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 100540342503 its reverse (305243045001), we get a palindrome (405783387504).

The spelling of 100540342503 in words is "one hundred billion, five hundred forty million, three hundred forty-two thousand, five hundred three".