123530113515 has 16 divisors (see below), whose sum is σ = 198740164896. Its totient is φ = 65518732800.

The previous prime is 123530113507. The next prime is 123530113547. The reversal of 123530113515 is 515311035321.

It is not a de Polignac number, because 123530113515 - 2³ = 123530113507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22746846 + ... + 22752275.

It is an arithmetic number, because the mean of its divisors is an integer number (12421260306).

Almost surely, 2^123530113515 is an apocalyptic number.

123530113515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123530113515 is a deficient number, since it is larger than the sum of its proper divisors (75210051381).

123530113515 is a wasteful number, since it uses less digits than its factorization.

123530113515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45499310.

The product of its (nonzero) digits is 6750, while the sum is 30.

Adding to 123530113515 its reverse (515311035321), we get a palindrome (638841148836).

The spelling of 123530113515 in words is "one hundred twenty-three billion, five hundred thirty million, one hundred thirteen thousand, five hundred fifteen".