123530718836 has 48 divisors (see below), whose sum is σ = 247536124416. Its totient is φ = 52840141824.

The previous prime is 123530718833. The next prime is 123530718853. The reversal of 123530718836 is 638817035321.

It is a super-2 number, since 2×123530718836² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123530718833) 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, 52408970 + ... + 52411326.

It is an arithmetic number, because the mean of its divisors is an integer number (5157002592).

Almost surely, 2^123530718836 is an apocalyptic number.

It is an amenable number.

123530718836 is an abundant number, since it is smaller than the sum of its proper divisors (124005405580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123530718836 is a wasteful number, since it uses less digits than its factorization.

123530718836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168 (or 5166 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 123530718836 in words is "one hundred twenty-three billion, five hundred thirty million, seven hundred eighteen thousand, eight hundred thirty-six".