123536536452 has 96 divisors (see below), whose sum is σ = 367356227840. Its totient is φ = 35168670720.

The previous prime is 123536536451. The next prime is 123536536463. The reversal of 123536536452 is 254635635321.

123536536452 is a `hidden beast` number, since 1 + 2 + 3 + 536 + 5 + 3 + 64 + 52 = 666.

It is a super-2 number, since 2×123536536452² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123536536398 and 123536536407.

It is not an unprimeable number, because it can be changed into a prime (123536536451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85549 + ... + 504372.

Almost surely, 2^123536536452 is an apocalyptic number.

123536536452 is a gapful number since it is divisible by the number (12) 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 123536536452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183678113920).

123536536452 is an abundant number, since it is smaller than the sum of its proper divisors (243819691388).

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

123536536452 is a wasteful number, since it uses less digits than its factorization.

123536536452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590218 (or 590210 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

The spelling of 123536536452 in words is "one hundred twenty-three billion, five hundred thirty-six million, five hundred thirty-six thousand, four hundred fifty-two".