20041510123 has 8 divisors (see below), whose sum is σ = 20697906240. Its totient is φ = 19394696640.

The previous prime is 20041510117. The next prime is 20041510127. The reversal of 20041510123 is 32101514002.

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

It is not a de Polignac number, because 20041510123 - 2⁹ = 20041509611 is a prime.

It is a super-2 number, since 2×20041510123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20041510123.

It is not an unprimeable number, because it can be changed into a prime (20041510127) 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 7 ways as a sum of consecutive naturals, for example, 2391408 + ... + 2399773.

It is an arithmetic number, because the mean of its divisors is an integer number (2587238280).

Almost surely, 2^20041510123 is an apocalyptic number.

20041510123 is a deficient number, since it is larger than the sum of its proper divisors (656396117).

20041510123 is an equidigital number, since it uses as much as digits as its factorization.

20041510123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791317.

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 20041510123 in words is "twenty billion, forty-one million, five hundred ten thousand, one hundred twenty-three".