5115523510123 has 8 divisors (see below), whose sum is σ = 5509223214768. Its totient is φ = 4721852076384.

The previous prime is 5115523510103. The next prime is 5115523510159. The reversal of 5115523510123 is 3210153255115.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5115523510123 - 2⁹ = 5115523509611 is a prime.

It is a super-2 number, since 2×5115523510123² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5115523510103) 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, 6691165 + ... + 7416382.

It is an arithmetic number, because the mean of its divisors is an integer number (688652901846).

Almost surely, 2^{5115523510123} is an apocalyptic number.

5115523510123 is a deficient number, since it is larger than the sum of its proper divisors (393699704645).

5115523510123 is a wasteful number, since it uses less digits than its factorization.

5115523510123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135453.

The product of its (nonzero) digits is 22500, while the sum is 34.

Adding to 5115523510123 its reverse (3210153255115), we get a palindrome (8325676765238).

The spelling of 5115523510123 in words is "five trillion, one hundred fifteen billion, five hundred twenty-three million, five hundred ten thousand, one hundred twenty-three".