123113177536 has 112 divisors (see below), whose sum is σ = 262258698240. Its totient is φ = 57231498240.

The previous prime is 123113177533. The next prime is 123113177563. The reversal of 123113177536 is 635771311321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123113177533) 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, 5655505 + ... + 5677231.

It is an arithmetic number, because the mean of its divisors is an integer number (2341595520).

Almost surely, 2^123113177536 is an apocalyptic number.

123113177536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123113177536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131129349120).

123113177536 is an abundant number, since it is smaller than the sum of its proper divisors (139145520704).

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

123113177536 is a wasteful number, since it uses less digits than its factorization.

123113177536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21882 (or 21872 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

Adding to 123113177536 its reverse (635771311321), we get a palindrome (758884488857).

The spelling of 123113177536 in words is "one hundred twenty-three billion, one hundred thirteen million, one hundred seventy-seven thousand, five hundred thirty-six".